a hundred and one/a million and one a thousand and one
or a thousand and one
phrase
You can use expressions such as a hundred and one, a thousand and one, and a million and one to emphasize that you are talking about a large number of things or people.
[emphasis]
There are a hundred and one ways in which you can raise money.
See full dictionary entry for one
Definition of 'a hundred and one/a million and one a thousand and one'