123112222132 has 12 divisors (see below), whose sum is σ = 215620565860. Its totient is φ = 61506346176.

The previous prime is 123112222111. The next prime is 123112222139. The reversal of 123112222132 is 231222211321.

It can be written as a sum of positive squares in 2 ways, for example, as 38857871376 + 84254350756 = 197124^2 + 290266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112222139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12435657 + ... + 12445552.

Almost surely, 2^123112222132 is an apocalyptic number.

It is an amenable number.

123112222132 is a deficient number, since it is larger than the sum of its proper divisors (92508343728).

123112222132 is a wasteful number, since it uses less digits than its factorization.

123112222132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24882450 (or 24882448 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 123112222132 its reverse (231222211321), we get a palindrome (354334433453).

The spelling of 123112222132 in words is "one hundred twenty-three billion, one hundred twelve million, two hundred twenty-two thousand, one hundred thirty-two".