23321013021 has 12 divisors (see below), whose sum is σ = 34933534272. Its totient is φ = 15547341852.

The previous prime is 23321013017. The next prime is 23321013043. The reversal of 23321013021 is 12031012332.

It is not a de Polignac number, because 23321013021 - 2² = 23321013017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23321012985 and 23321013003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321013011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47985381 + ... + 47985866.

It is an arithmetic number, because the mean of its divisors is an integer number (2911127856).

Almost surely, 2^23321013021 is an apocalyptic number.

It is an amenable number.

23321013021 is a deficient number, since it is larger than the sum of its proper divisors (11612521251).

23321013021 is an frugal number, since it uses more digits than its factorization.

23321013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95971262 (or 95971250 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23321013021 its reverse (12031012332), we get a palindrome (35352025353).

The spelling of 23321013021 in words is "twenty-three billion, three hundred twenty-one million, thirteen thousand, twenty-one".