The oldest man in the world, who survived the Nazi invasion of Poland by fleeing to Russia, died peacefully in his Upper West Side apartment on Sunday at age 111.

Alexander Imich, credited his long life to eating healthy, exercising when he was younger and staying away from booze.

“I don’t know, I simply didn’t die earlier,” Imich quipped last month to NBC, which reported his death, citing friends. “I have no idea how this happened.”

After fleeing the Nazis, Imich, born on Feb. 4, 1903, spent two years in a Russian labor camp before coming to the United States in 1952 to work as a chemist, according to The Jewish Press.

Imich, who had no children, was weak with failing eyesight in his final years and was almost deaf after losing both his hearing aids, the newspaper reported.

The oldest man in the world is now a Japanese man who was born just one day after Imich.

There are 66 women who are older. One, in Japan, is 116.