12013223112 has 48 divisors (see below), whose sum is σ = 35493616080. Its totient is φ = 3640370400.

The previous prime is 12013223107. The next prime is 12013223141. The reversal of 12013223112 is 21132231021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7583314 + ... + 7584897.

It is an arithmetic number, because the mean of its divisors is an integer number (739450335).

Almost surely, 2^12013223112 is an apocalyptic number.

12013223112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12013223112 is an abundant number, since it is smaller than the sum of its proper divisors (23480392968).

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

12013223112 is a wasteful number, since it uses less digits than its factorization.

12013223112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168234 (or 15168227 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12013223112 its reverse (21132231021), we get a palindrome (33145454133).

The spelling of 12013223112 in words is "twelve billion, thirteen million, two hundred twenty-three thousand, one hundred twelve".