11922804875521 has 16 divisors (see below), whose sum is σ = 12215779626960. Its totient is φ = 11632358799360.

The previous prime is 11922804875477. The next prime is 11922804875693. The reversal of 11922804875521 is 12557840822911.

11922804875521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 16606188225 + 11906198687296 = 128865^2 + 3450536^2 .

It is a cyclic number.

It is not a de Polignac number, because 11922804875521 - 2²⁵ = 11922771321089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11922804875021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158525101 + ... + 158600293.

It is an arithmetic number, because the mean of its divisors is an integer number (763486226685).

Almost surely, 2^{11922804875521} is an apocalyptic number.

It is an amenable number.

11922804875521 is a deficient number, since it is larger than the sum of its proper divisors (292974751439).

11922804875521 is a wasteful number, since it uses less digits than its factorization.

11922804875521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91956.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 11922804875521 in words is "eleven trillion, nine hundred twenty-two billion, eight hundred four million, eight hundred seventy-five thousand, five hundred twenty-one".