21122564336 has 40 divisors (see below), whose sum is σ = 42079338000. Its totient is φ = 10265300480.

The previous prime is 21122564317. The next prime is 21122564363. The reversal of 21122564336 is 63346522112.

It is a junction number, because it is equal to n+sod(n) for n = 21122564296 and 21122564305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116615 + ... + 236313.

It is an arithmetic number, because the mean of its divisors is an integer number (1051983450).

Almost surely, 2^21122564336 is an apocalyptic number.

It is an amenable number.

21122564336 is a deficient number, since it is larger than the sum of its proper divisors (20956773664).

21122564336 is a wasteful number, since it uses less digits than its factorization.

21122564336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120017 (or 120011 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The spelling of 21122564336 in words is "twenty-one billion, one hundred twenty-two million, five hundred sixty-four thousand, three hundred thirty-six".