23330331021 has 24 divisors (see below), whose sum is σ = 34783787680. Its totient is φ = 13868174592.

The previous prime is 23330330957. The next prime is 23330331043. The reversal of 23330331021 is 12013303332.

It is not a de Polignac number, because 23330331021 - 2⁶ = 23330330957 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 (23330331071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691666 + ... + 724611.

Almost surely, 2^23330331021 is an apocalyptic number.

It is an amenable number.

23330331021 is a deficient number, since it is larger than the sum of its proper divisors (11453456659).

23330331021 is a wasteful number, since it uses less digits than its factorization.

23330331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416333 (or 1416316 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 23330331021 its reverse (12013303332), we get a palindrome (35343634353).

The spelling of 23330331021 in words is "twenty-three billion, three hundred thirty million, three hundred thirty-one thousand, twenty-one".