21365611322 has 32 divisors (see below), whose sum is σ = 38295011520. Its totient is φ = 8825178880.

The previous prime is 21365611291. The next prime is 21365611363. The reversal of 21365611322 is 22311656312.

It is a happy number.

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, 974108 + ... + 995799.

It is an arithmetic number, because the mean of its divisors is an integer number (1196719110).

Almost surely, 2^21365611322 is an apocalyptic number.

21365611322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21365611322 is a deficient number, since it is larger than the sum of its proper divisors (16929400198).

21365611322 is a wasteful number, since it uses less digits than its factorization.

21365611322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969966.

The product of its digits is 12960, while the sum is 32.

The spelling of 21365611322 in words is "twenty-one billion, three hundred sixty-five million, six hundred eleven thousand, three hundred twenty-two".