23111330131021 has 4 divisors (see below), whose sum is σ = 25212360142944. Its totient is φ = 21010300119100.

The previous prime is 23111330130983. The next prime is 23111330131027. The reversal of 23111330131021 is 12013103311132.

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 a de Polignac number, because none of the positive numbers 2^k-23111330131021 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23111330130983 and 23111330131001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111330131027) 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, 1050515005945 + ... + 1050515005966.

It is an arithmetic number, because the mean of its divisors is an integer number (6303090035736).

Almost surely, 2^{23111330131021} is an apocalyptic number.

It is an amenable number.

23111330131021 is a deficient number, since it is larger than the sum of its proper divisors (2101030011923).

23111330131021 is a wasteful number, since it uses less digits than its factorization.

23111330131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101030011922.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 23111330131021 its reverse (12013103311132), we get a palindrome (35124433442153).

The spelling of 23111330131021 in words is "twenty-three trillion, one hundred eleven billion, three hundred thirty million, one hundred thirty-one thousand, twenty-one".