23320203121 has 2 divisors, whose sum is σ = 23320203122. Its totient is φ = 23320203120.

The previous prime is 23320203119. The next prime is 23320203133. The reversal of 23320203121 is 12130202332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22895018721 + 425184400 = 151311^2 + 20620^2 .

It is a cyclic number.

It is not a de Polignac number, because 23320203121 - 2¹ = 23320203119 is a prime.

Together with 23320203119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23320203161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660101560 + 11660101561.

It is an arithmetic number, because the mean of its divisors is an integer number (11660101561).

Almost surely, 2^23320203121 is an apocalyptic number.

It is an amenable number.

23320203121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23320203121 is an equidigital number, since it uses as much as digits as its factorization.

23320203121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23320203121 its reverse (12130202332), we get a palindrome (35450405453).

The spelling of 23320203121 in words is "twenty-three billion, three hundred twenty million, two hundred three thousand, one hundred twenty-one".