Yoshitsugu Nagata, an official in charge of elderly policies, said Itooka died on Dec. 29 at a care home in Ashiya, Hyogo Prefecture, central Japan.
Itooka, who loved bananas and a yogurt-flavored Japanese drink called Calpis, was born on May 23, 1908. She became the oldest person last year following the death of 117-year-old Maria Branyas, according to the Gerontology Research Group.
When she was told she was at the top of the World Supercentenarian Rankings List, she simply replied, "Thank you."