Background: Erykah Badu was born Erica Abi Wright in Dallas, Texas. Her mother raised her, her brother Eevin, and her sister Nayrok alone after separating from their father, William Wright Jr. To provide for her family, the children's maternal and paternal grandmothers often helped look after them. Badu had her first taste of show business at the age of four, singing and dancing at the Dallas Theater Center and The Black Academy of Arts and Letters (TBAAL) under the guidance of her godmother, Gwen Hargrove, and uncle TBAAL founder Curtis King.
Context: Baduizm, Badu's debut album, was released in early 1997. The album met with critical and commercial success, debuting at number two on the Billboard charts and number one on the US Billboard Top R&B/Hip-Hop Albums. Baduizm's commercial and critical success helped establish Badu as one of the emerging neo soul genre's leading artists. Her particular style of singing drew many comparisons to Billie Holiday. Baduizm was certified three times platinum by the Recording Industry Association of America, Gold by the British Phonographic Industry and the Canadian Recording Industry Association.  The album produced four singles; the lead single "On & On" was released in January 1996, and reached number twelve on the US Billboard Hot 100 charts and the UK Singles Charts, as well as making an appearance on the New Zealand charts. The album and lead single also gave Badu her first nomination and win at the Grammy Awards, where "On & On" won Best Female R&B Vocal Performance and the album won Best R&B Album.  Badu recorded her first live album, Live, while pregnant with Seven, and the release of the recording coincided with his birth. The album was released on November 18, 1997 and reached number four on the US Billboard 200 and number one on the US Billboard Top R&B/Hip-Hop Albums. The album was certified two times platinum by RIAA for shipments of over two million copies. The album's lead single, "Tyrone", was released in October 1997 and became another R&B hit single. "Tyrone", lyrically, is a song chiding a selfish, cheap, and inattentive boyfriend. Badu also collaborated with the Roots (who had previously handled production duties on a number of tracks on Baduizm) on their breakthrough 1999 release Things Fall Apart. She was featured on the song "You Got Me", by The Roots and American female rapper Eve. Co-written by Jill Scott, the song peaked at 39 in the US and 31 in the UK. The song went on to win The Roots and Badu a Grammy Award for Best Rap Performance by a Duo or Group in 1999.
Question: How successful was this album on the charts?

Answer:
The album was released on November 18, 1997 and reached number four on the US Billboard 200 and number one on the US Billboard Top R&B/Hip-Hop Albums.