23320233221 has 2 divisors, whose sum is σ = 23320233222. Its totient is φ = 23320233220.

The previous prime is 23320233203. The next prime is 23320233227. The reversal of 23320233221 is 12233202332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15280420996 + 8039812225 = 123614^2 + 89665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23320233221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23320233227) 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, 11660116610 + 11660116611.

It is an arithmetic number, because the mean of its divisors is an integer number (11660116611).

Almost surely, 2^23320233221 is an apocalyptic number.

It is an amenable number.

23320233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23320233221 is an equidigital number, since it uses as much as digits as its factorization.

23320233221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 23320233221 its reverse (12233202332), we get a palindrome (35553435553).

The spelling of 23320233221 in words is "twenty-three billion, three hundred twenty million, two hundred thirty-three thousand, two hundred twenty-one".