23332133221 has 2 divisors, whose sum is σ = 23332133222. Its totient is φ = 23332133220.

The previous prime is 23332133177. The next prime is 23332133239. The reversal of 23332133221 is 12233123332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11692096900 + 11640036321 = 108130^2 + 107889^2 .

It is a cyclic number.

It is not a de Polignac number, because 23332133221 - 2⁷ = 23332133093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23332133821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11666066610 + 11666066611.

It is an arithmetic number, because the mean of its divisors is an integer number (11666066611).

Almost surely, 2^23332133221 is an apocalyptic number.

It is an amenable number.

23332133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23332133221 is an equidigital number, since it uses as much as digits as its factorization.

23332133221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 25.

Adding to 23332133221 its reverse (12233123332), we get a palindrome (35565256553).

The spelling of 23332133221 in words is "twenty-three billion, three hundred thirty-two million, one hundred thirty-three thousand, two hundred twenty-one".