21522507113 has 16 divisors (see below), whose sum is σ = 22579015680. Its totient is φ = 20489926800.

The previous prime is 21522507043. The next prime is 21522507131. The reversal of 21522507113 is 31170522512.

It is a cyclic number.

It is not a de Polignac number, because 21522507113 - 2¹⁴ = 21522490729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21522507143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017398 + ... + 1038336.

It is an arithmetic number, because the mean of its divisors is an integer number (1411188480).

Almost surely, 2^21522507113 is an apocalyptic number.

It is an amenable number.

21522507113 is a deficient number, since it is larger than the sum of its proper divisors (1056508567).

21522507113 is a wasteful number, since it uses less digits than its factorization.

21522507113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21508.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 21522507113 in words is "twenty-one billion, five hundred twenty-two million, five hundred seven thousand, one hundred thirteen".