23012312121 has 12 divisors (see below), whose sum is σ = 33273834048. Its totient is φ = 15325928664.

The previous prime is 23012312117. The next prime is 23012312149. The reversal of 23012312121 is 12121321032.

23012312121 is a `hidden beast` number, since 230 + 1 + 2 + 312 + 121 = 666.

It is not a de Polignac number, because 23012312121 - 2² = 23012312117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23012312094 and 23012312103.

It is not an unprimeable number, because it can be changed into a prime (23012312101) 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, 1291725 + ... + 1309418.

It is an arithmetic number, because the mean of its divisors is an integer number (2772819504).

Almost surely, 2^23012312121 is an apocalyptic number.

It is an amenable number.

23012312121 is a deficient number, since it is larger than the sum of its proper divisors (10261521927).

23012312121 is a wasteful number, since it uses less digits than its factorization.

23012312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602132 (or 2602129 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23012312121 its reverse (12121321032), we get a palindrome (35133633153).

The spelling of 23012312121 in words is "twenty-three billion, twelve million, three hundred twelve thousand, one hundred twenty-one".