Bilbo Baggins celebrates his famous birthday at age 111 in J.R.R. Tolkien’s The Lord of the Rings.
The opening of The Fellowship of the Ring describes a joint birthday party for Bilbo and Frodo at Bag End. Bilbo is celebrating his eleventy-first birthday, while Frodo is turning 33. In Hobbit culture, reaching 33 marks adulthood, making the shared celebration especially significant.
Bilbo’s party is memorable because he uses it to announce his departure. During his speech, he vanishes with the help of the One Ring and leaves Bag End, the Ring, and his possessions to Frodo. Gandalf later investigates the Ring and urges Frodo to leave the Shire.
The number 111 is not a typo or a modern age label. Tolkien uses “eleventy-first,” a playful Hobbit expression for 111. Bilbo’s long life also reflects Hobbit longevity, but the exact birthday is important mainly because it begins the chain of events leading to Frodo’s quest.