22221037508 has 12 divisors (see below), whose sum is σ = 38909715600. Its totient is φ = 11103975912.

The previous prime is 22221037493. The next prime is 22221037511. The reversal of 22221037508 is 80573012222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628066 + ... + 1641657.

It is an arithmetic number, because the mean of its divisors is an integer number (3242476300).

Almost surely, 2^22221037508 is an apocalyptic number.

It is an amenable number.

22221037508 is a deficient number, since it is larger than the sum of its proper divisors (16688678092).

22221037508 is a wasteful number, since it uses less digits than its factorization.

22221037508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271426 (or 3271424 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 22221037508 in words is "twenty-two billion, two hundred twenty-one million, thirty-seven thousand, five hundred eight".