23220032121 has 96 divisors (see below), whose sum is σ = 40510614144. Its totient is φ = 12628224000.

The previous prime is 23220032111. The next prime is 23220032177. The reversal of 23220032121 is 12123002232.

23220032121 is a `hidden beast` number, since 2 + 322 + 0 + 0 + 321 + 21 = 666.

It is not a de Polignac number, because 23220032121 - 2¹³ = 23220023929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23220032094 and 23220032103.

It is not an unprimeable number, because it can be changed into a prime (23220032111) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13336311 + ... + 13338051.

It is an arithmetic number, because the mean of its divisors is an integer number (421985564).

Almost surely, 2^23220032121 is an apocalyptic number.

It is an amenable number.

23220032121 is a deficient number, since it is larger than the sum of its proper divisors (17290582023).

23220032121 is a wasteful number, since it uses less digits than its factorization.

23220032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2052 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23220032121 its reverse (12123002232), we get a palindrome (35343034353).

The spelling of 23220032121 in words is "twenty-three billion, two hundred twenty million, thirty-two thousand, one hundred twenty-one".