123012002112 has 56 divisors (see below), whose sum is σ = 325495346976. Its totient is φ = 41000713728.

The previous prime is 123012002107. The next prime is 123012002123. The reversal of 123012002112 is 211200210321.

It is a junction number, because it is equal to n+sod(n) for n = 123012002091 and 123012002100.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4083618 + ... + 4113630.

Almost surely, 2^123012002112 is an apocalyptic number.

123012002112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123012002112 is an abundant number, since it is smaller than the sum of its proper divisors (202483344864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123012002112 is a wasteful number, since it uses less digits than its factorization.

123012002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51375 (or 51365 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 123012002112 its reverse (211200210321), we get a palindrome (334212212433).

The spelling of 123012002112 in words is "one hundred twenty-three billion, twelve million, two thousand, one hundred twelve".