23102421004921 has 2 divisors, whose sum is σ = 23102421004922. Its totient is φ = 23102421004920.

The previous prime is 23102421004891. The next prime is 23102421005011. The reversal of 23102421004921 is 12940012420132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20663061200896 + 2439359804025 = 4545664^2 + 1561845^2 .

It is a cyclic number.

It is not a de Polignac number, because 23102421004921 - 2¹¹ = 23102421002873 is a prime.

It is not a weakly prime, because it can be changed into another prime (23102421074921) 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, 11551210502460 + 11551210502461.

It is an arithmetic number, because the mean of its divisors is an integer number (11551210502461).

Almost surely, 2^{23102421004921} is an apocalyptic number.

It is an amenable number.

23102421004921 is a deficient number, since it is larger than the sum of its proper divisors (1).

23102421004921 is an equidigital number, since it uses as much as digits as its factorization.

23102421004921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 23102421004921 in words is "twenty-three trillion, one hundred two billion, four hundred twenty-one million, four thousand, nine hundred twenty-one".