What are the equivalents of millionnaire, multimillionaire and billionaire in Japanese? I'm talking about the "cultural" ones, because with the yen currency the scale is completely different (millionnaire with yen is only about having approximately 10 000 usd so I don't think it's the real equivalent).

is the best-known word. Actually there is also a word , but it's not commonly used for the obvious reason.

is at least understood because of this TV program, but it's not used in daily conversations.