23351052132421 has 12 divisors (see below), whose sum is σ = 25340071124928. Its totient is φ = 21508262599824.

The previous prime is 23351052132407. The next prime is 23351052132469. The reversal of 23351052132421 is 12423125015332.

It is not a de Polignac number, because 23351052132421 - 2⁵ = 23351052132389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23351052133421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149135475 + ... + 149291968.

It is an arithmetic number, because the mean of its divisors is an integer number (2111672593744).

Almost surely, 2^{23351052132421} is an apocalyptic number.

It is an amenable number.

23351052132421 is a deficient number, since it is larger than the sum of its proper divisors (1989018992507).

23351052132421 is a wasteful number, since it uses less digits than its factorization.

23351052132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298427932 (or 298427919 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 23351052132421 its reverse (12423125015332), we get a palindrome (35774177147753).

The spelling of 23351052132421 in words is "twenty-three trillion, three hundred fifty-one billion, fifty-two million, one hundred thirty-two thousand, four hundred twenty-one".