Here is the double question:
Only that often times I see "often times" and "life like" written as two words: "often times," "life like." I assume in such a context as "That's a lifelike doll," they're compound words, and I can't think of a way to say them as two words. Tell me if I'm wrong!
The short answer for both is that each is one word: oftentimes and lifelike.
You might consider using just the word often instead of oftentimes: fewer letters.