23312223121 has 6 divisors (see below), whose sum is σ = 25624179266. Its totient is φ = 21192930000.

The previous prime is 23312223113. The next prime is 23312223157. The reversal of 23312223121 is 12132221332.

It can be written as a sum of positive squares in only one way, i.e., 20638195600 + 2674027521 = 143660^2 + 51711^2 .

It is not a de Polignac number, because 23312223121 - 2³ = 23312223113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23312223092 and 23312223101.

It is not an unprimeable number, because it can be changed into a prime (23312223101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96331380 + ... + 96331621.

Almost surely, 2^23312223121 is an apocalyptic number.

It is an amenable number.

23312223121 is a deficient number, since it is larger than the sum of its proper divisors (2311956145).

23312223121 is a wasteful number, since it uses less digits than its factorization.

23312223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192663023 (or 192663012 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 23312223121 its reverse (12132221332), we get a palindrome (35444444453).

The spelling of 23312223121 in words is "twenty-three billion, three hundred twelve million, two hundred twenty-three thousand, one hundred twenty-one".