23122312010021 has 4 divisors (see below), whose sum is σ = 26425499440032. Its totient is φ = 19819124580012.

The previous prime is 23122312010009. The next prime is 23122312010029. The reversal of 23122312010021 is 12001021322132.

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 23122312010021 - 2¹⁸ = 23122311747877 is a prime.

It is a super-2 number, since 2×23122312010021² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23122312009975 and 23122312010002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122312010029) 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, 1651593714995 + ... + 1651593715008.

It is an arithmetic number, because the mean of its divisors is an integer number (6606374860008).

Almost surely, 2^{23122312010021} is an apocalyptic number.

It is an amenable number.

23122312010021 is a deficient number, since it is larger than the sum of its proper divisors (3303187430011).

23122312010021 is an equidigital number, since it uses as much as digits as its factorization.

23122312010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303187430010.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 23122312010021 its reverse (12001021322132), we get a palindrome (35123333332153).

The spelling of 23122312010021 in words is "twenty-three trillion, one hundred twenty-two billion, three hundred twelve million, ten thousand, twenty-one".