23323213021 has 2 divisors, whose sum is σ = 23323213022. Its totient is φ = 23323213020.

The previous prime is 23323213009. The next prime is 23323213027. The reversal of 23323213021 is 12031232332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13643408025 + 9679804996 = 116805^2 + 98386^2 .

It is a cyclic number.

It is not a de Polignac number, because 23323213021 - 2¹³ = 23323204829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23323212983 and 23323213001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23323213027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11661606510 + 11661606511.

It is an arithmetic number, because the mean of its divisors is an integer number (11661606511).

Almost surely, 2^23323213021 is an apocalyptic number.

It is an amenable number.

23323213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23323213021 is an equidigital number, since it uses as much as digits as its factorization.

23323213021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 23323213021 its reverse (12031232332), we get a palindrome (35354445353).

The spelling of 23323213021 in words is "twenty-three billion, three hundred twenty-three million, two hundred thirteen thousand, twenty-one".