23021133121 has 16 divisors (see below), whose sum is σ = 26944634880. Its totient is φ = 19258667280.

The previous prime is 23021133103. The next prime is 23021133131. The reversal of 23021133121 is 12133112032.

It is a cyclic number.

It is not a de Polignac number, because 23021133121 - 2⁵ = 23021133089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23021133131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20656 + ... + 215566.

It is an arithmetic number, because the mean of its divisors is an integer number (1684039680).

Almost surely, 2^23021133121 is an apocalyptic number.

It is an amenable number.

23021133121 is a deficient number, since it is larger than the sum of its proper divisors (3923501759).

23021133121 is a wasteful number, since it uses less digits than its factorization.

23021133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195324.

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

Adding to 23021133121 its reverse (12133112032), we get a palindrome (35154245153).

The spelling of 23021133121 in words is "twenty-three billion, twenty-one million, one hundred thirty-three thousand, one hundred twenty-one".