Sakari Momoi, a Japanese former agricultural chemistry teacher, became the world's oldest man after his predecessor Alexander Imich died at the age of 111 years and 124 days in 2014.
Momoi was born on 5 February 1903 in Fukushima city , just one day after Imich. He has five children and currently lives in a hospital in Tokyo. He married the late Ms Tamiko in 1928.
Momoi responded with a smile as his family helped him celebrate on Thursday (5 February), his third son Hiroo, 66, told news agency Kyodo.
