12013031112 has 32 divisors (see below), whose sum is σ = 30035901600. Its totient is φ = 4003900544.

The previous prime is 12013031101. The next prime is 12013031153. The reversal of 12013031112 is 21113031021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12013031091 and 12013031100.

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, 250843 + ... + 294869.

It is an arithmetic number, because the mean of its divisors is an integer number (938621925).

Almost surely, 2^12013031112 is an apocalyptic number.

12013031112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12013031112 is an abundant number, since it is smaller than the sum of its proper divisors (18022870488).

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

12013031112 is a wasteful number, since it uses less digits than its factorization.

12013031112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55405 (or 55401 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12013031112 its reverse (21113031021), we get a palindrome (33126062133).

Subtracting 12013031112 from its reverse (21113031021), we obtain a palindrome (9099999909).

The spelling of 12013031112 in words is "twelve billion, thirteen million, thirty-one thousand, one hundred twelve".