23211023121 has 80 divisors (see below), whose sum is σ = 40834886400. Its totient is φ = 12953364480.

The previous prime is 23211023119. The next prime is 23211023167. The reversal of 23211023121 is 12132011232.

It is not a de Polignac number, because 23211023121 - 2¹ = 23211023119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23211023094 and 23211023103.

It is not an unprimeable number, because it can be changed into a prime (23211023021) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5198536 + ... + 5202998.

It is an arithmetic number, because the mean of its divisors is an integer number (510436080).

Almost surely, 2^23211023121 is an apocalyptic number.

It is an amenable number.

23211023121 is a deficient number, since it is larger than the sum of its proper divisors (17623863279).

23211023121 is a wasteful number, since it uses less digits than its factorization.

23211023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23211023121 its reverse (12132011232), we get a palindrome (35343034353).

The spelling of 23211023121 in words is "twenty-three billion, two hundred eleven million, twenty-three thousand, one hundred twenty-one".