23202021021 has 16 divisors (see below), whose sum is σ = 32263193088. Its totient is φ = 14814720000.

The previous prime is 23202020957. The next prime is 23202021049. The reversal of 23202021021 is 12012020232.

It is a happy number.

It is not a de Polignac number, because 23202021021 - 2⁶ = 23202020957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23202021071) 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, 1276980 + ... + 1295021.

It is an arithmetic number, because the mean of its divisors is an integer number (2016449568).

Almost surely, 2^23202021021 is an apocalyptic number.

It is an amenable number.

23202021021 is a deficient number, since it is larger than the sum of its proper divisors (9061172067).

23202021021 is a wasteful number, since it uses less digits than its factorization.

23202021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572132.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23202021021 its reverse (12012020232), we get a palindrome (35214041253).

The spelling of 23202021021 in words is "twenty-three billion, two hundred two million, twenty-one thousand, twenty-one".