23210152121 has 16 divisors (see below), whose sum is σ = 25653075840. Its totient is φ = 20868435840.

The previous prime is 23210152093. The next prime is 23210152123. The reversal of 23210152121 is 12125101232.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23210152121 is a prime.

It is a super-2 number, since 2×23210152121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23210152093 and 23210152102.

It is not an unprimeable number, because it can be changed into a prime (23210152123) 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, 74876 + ... + 228093.

It is an arithmetic number, because the mean of its divisors is an integer number (1603317240).

Almost surely, 2^23210152121 is an apocalyptic number.

It is an amenable number.

23210152121 is a deficient number, since it is larger than the sum of its proper divisors (2442923719).

23210152121 is a wasteful number, since it uses less digits than its factorization.

23210152121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303136.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 23210152121 its reverse (12125101232), we get a palindrome (35335253353).

The spelling of 23210152121 in words is "twenty-three billion, two hundred ten million, one hundred fifty-two thousand, one hundred twenty-one".