23121110100131 has 4 divisors (see below), whose sum is σ = 23200021738992. Its totient is φ = 23042198461272.

The previous prime is 23121110100089. The next prime is 23121110100133. The reversal of 23121110100131 is 13100101112132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121110100131 is a prime.

It is a super-2 number, since 2×23121110100131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121110100133) 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, 39455818991 + ... + 39455819576.

It is an arithmetic number, because the mean of its divisors is an integer number (5800005434748).

Almost surely, 2^{23121110100131} is an apocalyptic number.

23121110100131 is a deficient number, since it is larger than the sum of its proper divisors (78911638861).

23121110100131 is an equidigital number, since it uses as much as digits as its factorization.

23121110100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78911638860.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 23121110100131 its reverse (13100101112132), we get a palindrome (36221211212263).

The spelling of 23121110100131 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred ten million, one hundred thousand, one hundred thirty-one".