23323231000021 has 2 divisors, whose sum is σ = 23323231000022. Its totient is φ = 23323231000020.

The previous prime is 23323230999953. The next prime is 23323231000057. The reversal of 23323231000021 is 12000013232332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13622410631025 + 9700820368996 = 3690855^2 + 3114614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23323231000021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23323230999956 and 23323231000001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23323231100021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11661615500010 + 11661615500011.

It is an arithmetic number, because the mean of its divisors is an integer number (11661615500011).

Almost surely, 2^{23323231000021} is an apocalyptic number.

It is an amenable number.

23323231000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23323231000021 is an equidigital number, since it uses as much as digits as its factorization.

23323231000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 23323231000021 its reverse (12000013232332), we get a palindrome (35323244232353).

The spelling of 23323231000021 in words is "twenty-three trillion, three hundred twenty-three billion, two hundred thirty-one million, twenty-one", and thus it is an aban number.