123112112 has 20 divisors (see below), whose sum is σ = 240114096. Its totient is φ = 61147200.

The previous prime is 123112103. The next prime is 123112151. The reversal of 123112112 is 211211321.

It is a super-2 number, since 2×123112112² = 30313184242201088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23063 + ... + 27894.

Almost surely, 2^123112112 is an apocalyptic number.

It is an amenable number.

123112112 is a deficient number, since it is larger than the sum of its proper divisors (117001984).

123112112 is a wasteful number, since it uses less digits than its factorization.

123112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51116 (or 51110 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 123112112 is about 11095.5897544925. The cubic root of 123112112 is about 497.4700361574.

Adding to 123112112 its reverse (211211321), we get a palindrome (334323433).

The spelling of 123112112 in words is "one hundred twenty-three million, one hundred twelve thousand, one hundred twelve".