23320232021 has 2 divisors, whose sum is σ = 23320232022. Its totient is φ = 23320232020.

The previous prime is 23320231997. The next prime is 23320232029. The reversal of 23320232021 is 12023202332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23315763025 + 4468996 = 152695^2 + 2114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23320232021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23320231984 and 23320232002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23320232029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660116010 + 11660116011.

It is an arithmetic number, because the mean of its divisors is an integer number (11660116011).

Almost surely, 2^23320232021 is an apocalyptic number.

It is an amenable number.

23320232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23320232021 is an equidigital number, since it uses as much as digits as its factorization.

23320232021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23320232021 its reverse (12023202332), we get a palindrome (35343434353).

The spelling of 23320232021 in words is "twenty-three billion, three hundred twenty million, two hundred thirty-two thousand, twenty-one".