23131532200121 has 16 divisors (see below), whose sum is σ = 24666967656576. Its totient is φ = 21615811527936.

The previous prime is 23131532200093. The next prime is 23131532200163. The reversal of 23131532200121 is 12100223513132.

It is a cyclic number.

It is not a de Polignac number, because 23131532200121 - 2⁶ = 23131532200057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23131532200921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155451 + ... + 7135056.

It is an arithmetic number, because the mean of its divisors is an integer number (1541685478536).

Almost surely, 2^{23131532200121} is an apocalyptic number.

It is an amenable number.

23131532200121 is a deficient number, since it is larger than the sum of its proper divisors (1535435456455).

23131532200121 is a wasteful number, since it uses less digits than its factorization.

23131532200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9291568.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 23131532200121 its reverse (12100223513132), we get a palindrome (35231755713253).

The spelling of 23131532200121 in words is "twenty-three trillion, one hundred thirty-one billion, five hundred thirty-two million, two hundred thousand, one hundred twenty-one".