Marshall Bruce Mathers III (born October 17, 1972), better known by his stage name Eminem and by his alter ego Slim Shady, is an American rapper, record producer, songwriter, and actor. In addition to his solo career, Eminem is a member of his group D12, as well as one half of the hip hop duo Bad Meets Evil, alongside Royce da 5'9". Eminem is one of the world's best-selling music artists and is the best-selling artist of the 2000s. He has been listed and ranked as one of the greatest artists of all time by many magazines, including Rolling Stone magazine which ranked him 82nd on its list of The 100 Greatest Artists of All Time. The same magazine declared him The King of Hip Hop. Including his work with D12 and Bad Meets Evil, Eminem has achieved ten number-one albums on the Billboard 200. Eminem has sold more than 80 million albums and over 120 million singles worldwide, making him one of the best-selling music artists of all time. As of early January 2012, he has sold 49.1 million albums and 42 million tracks in the United States alone.