12792616522921 has 4 divisors (see below), whose sum is σ = 12813283109200. Its totient is φ = 12771949936644.

The previous prime is 12792616522897. The next prime is 12792616522979. The reversal of 12792616522921 is 12922561629721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12792616522921 - 2⁹ = 12792616522409 is a prime.

It is a super-2 number, since 2×12792616522921² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12792616522321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10333292211 + ... + 10333293448.

It is an arithmetic number, because the mean of its divisors is an integer number (3203320777300).

Almost surely, 2^{12792616522921} is an apocalyptic number.

It is an amenable number.

12792616522921 is a deficient number, since it is larger than the sum of its proper divisors (20666586279).

12792616522921 is an equidigital number, since it uses as much as digits as its factorization.

12792616522921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666586278.

The product of its digits is 3265920, while the sum is 55.

The spelling of 12792616522921 in words is "twelve trillion, seven hundred ninety-two billion, six hundred sixteen million, five hundred twenty-two thousand, nine hundred twenty-one".