21650552202 has 32 divisors (see below), whose sum is σ = 44418813120. Its totient is φ = 7031404800.

The previous prime is 21650552173. The next prime is 21650552219. The reversal of 21650552202 is 20225505612.

It is a self number, because there is not a number n which added to its sum of digits gives 21650552202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1177 + ... + 208092.

It is an arithmetic number, because the mean of its divisors is an integer number (1388087910).

Almost surely, 2^21650552202 is an apocalyptic number.

21650552202 is an abundant number, since it is smaller than the sum of its proper divisors (22768260918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21650552202 is a wasteful number, since it uses less digits than its factorization.

21650552202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209718.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 21650552202 in words is "twenty-one billion, six hundred fifty million, five hundred fifty-two thousand, two hundred two".