23210231021 has 2 divisors, whose sum is σ = 23210231022. Its totient is φ = 23210231020.

The previous prime is 23210230961. The next prime is 23210231069. The reversal of 23210231021 is 12013201232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20631013225 + 2579217796 = 143635^2 + 50786^2 .

It is a cyclic number.

It is not a de Polignac number, because 23210231021 - 2²² = 23206036717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23210231081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605115510 + 11605115511.

It is an arithmetic number, because the mean of its divisors is an integer number (11605115511).

Almost surely, 2^23210231021 is an apocalyptic number.

It is an amenable number.

23210231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23210231021 is an equidigital number, since it uses as much as digits as its factorization.

23210231021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23210231021 its reverse (12013201232), we get a palindrome (35223432253).

The spelling of 23210231021 in words is "twenty-three billion, two hundred ten million, two hundred thirty-one thousand, twenty-one".