22975133157921 has 24 divisors (see below), whose sum is σ = 35635084120800. Its totient is φ = 13128579835392.

The previous prime is 22975133157857. The next prime is 22975133157947. The reversal of 22975133157921 is 12975133157922.

It is not a de Polignac number, because 22975133157921 - 2⁶ = 22975133157857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22975133177921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47579905 + ... + 48060353.

It is an arithmetic number, because the mean of its divisors is an integer number (1484795171700).

Almost surely, 2^{22975133157921} is an apocalyptic number.

22975133157921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22975133157921 is a deficient number, since it is larger than the sum of its proper divisors (12659950962879).

22975133157921 is a wasteful number, since it uses less digits than its factorization.

22975133157921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805773 (or 805766 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 57.

Subtracting from 22975133157921 its reverse (12975133157922), we obtain a palindrome (9999999999999).

The spelling of 22975133157921 in words is "twenty-two trillion, nine hundred seventy-five billion, one hundred thirty-three million, one hundred fifty-seven thousand, nine hundred twenty-one".