23122142121 has 24 divisors (see below), whose sum is σ = 34834919616. Its totient is φ = 13610351040.

The previous prime is 23122142117. The next prime is 23122142159. The reversal of 23122142121 is 12124122132.

It is a happy number.

It is not a de Polignac number, because 23122142121 - 2² = 23122142117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23122142821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 979770 + ... + 1003091.

It is an arithmetic number, because the mean of its divisors is an integer number (1451454984).

Almost surely, 2^23122142121 is an apocalyptic number.

It is an amenable number.

23122142121 is a deficient number, since it is larger than the sum of its proper divisors (11712777495).

23122142121 is a wasteful number, since it uses less digits than its factorization.

23122142121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982913 (or 1982900 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

Adding to 23122142121 its reverse (12124122132), we get a palindrome (35246264253).

The spelling of 23122142121 in words is "twenty-three billion, one hundred twenty-two million, one hundred forty-two thousand, one hundred twenty-one".