This name is more popular in English-speaking African countries like Kenya, Nigeria, Uganda and Tanzania. Apparently, it's also popular in Indonesia. https://forebears.io/forenames/titus
This name is also used in the Netherlands. As someone mentioned above, it was the name of Rembrandt's son, and it is still used, though not very commonly, today. It is pronounced TEE-tus.
https://forebears.io/forenames/titus