MacKenzie Bezos, ex wife of the world's richest man, Jeff Bezos is officially the 22nd richest person in the world thanks to her huge divorce settlement. 

Under the agreement, MacKenzie Bezos, 49, will receive approximately 19.7 million Amazon.com shares, giving her a four percent stake in the company valued at $38.3 billion.

Jeff Bezos, 55, will however retain a 12 percent stake and remain the world's richest man.

The former Mrs Bezos has promised to donate half her fortune to charity.

Jeff and MacKenzie Bezos married in 1993 and have four children while she has an 18-year-old son from a previous relationship.