Passage: Each of the 21 inhabited islands has its own local council that takes care of daily affairs. There is one council for each inhabited island, with two exceptions: Tarawa Atoll has three councils: Betio Town Council, Te Inainano Urban Council (for the rest of South Tarawa) and Eutan Tarawa Council (for North Tarawa); and Tabiteuea has two councils.

Question: How many inhabited islands are there?
21