110 is also known as “eleventy”, a famous term by Tolkin, a linguist and writer Tolkien (Bilbo Baggins celebrates his one-year birthday at the beginning of The Lord of the Rings), originating from Old English hund endleofantig .
It is 110. It is a word made by the author of the Lord of the Rings. It conforms to a certain word formation, but it is not a universally formal word. It is best not to use it in formal situations. For example, domestic netizens combined with pinyin and English-made niubility are used by many people on the Internet, but they will not be used in formal occasions.