23110133221 has 4 divisors (see below), whose sum is σ = 26411580832. Its totient is φ = 19808685612.

The previous prime is 23110133203. The next prime is 23110133273. The reversal of 23110133221 is 12233101132.

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 23110133221 - 2⁷ = 23110133093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110133201) 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, 1650723795 + ... + 1650723808.

It is an arithmetic number, because the mean of its divisors is an integer number (6602895208).

Almost surely, 2^23110133221 is an apocalyptic number.

It is an amenable number.

23110133221 is a deficient number, since it is larger than the sum of its proper divisors (3301447611).

23110133221 is an equidigital number, since it uses as much as digits as its factorization.

23110133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301447610.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23110133221 its reverse (12233101132), we get a palindrome (35343234353).

The spelling of 23110133221 in words is "twenty-three billion, one hundred ten million, one hundred thirty-three thousand, two hundred twenty-one".