23113231122221 has 4 divisors (see below), whose sum is σ = 23113337147712. Its totient is φ = 23113125096732.

The previous prime is 23113231122193. The next prime is 23113231122239. The reversal of 23113231122221 is 12222113231132.

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 23113231122221 - 2¹⁸ = 23113230860077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23113231122521) 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, 52685075 + ... + 53121968.

It is an arithmetic number, because the mean of its divisors is an integer number (5778334286928).

Almost surely, 2^{23113231122221} is an apocalyptic number.

It is an amenable number.

23113231122221 is a deficient number, since it is larger than the sum of its proper divisors (106025491).

23113231122221 is a wasteful number, since it uses less digits than its factorization.

23113231122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106025490.

The product of its digits is 1728, while the sum is 26.

Adding to 23113231122221 its reverse (12222113231132), we get a palindrome (35335344353353).

The spelling of 23113231122221 in words is "twenty-three trillion, one hundred thirteen billion, two hundred thirty-one million, one hundred twenty-two thousand, two hundred twenty-one".