12720118124 has 24 divisors (see below), whose sum is σ = 25592582400. Its totient is φ = 5418833616.

The previous prime is 12720118123. The next prime is 12720118133. The reversal of 12720118124 is 42181102721.

It is not an unprimeable number, because it can be changed into a prime (12720118123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355474 + ... + 1364825.

It is an arithmetic number, because the mean of its divisors is an integer number (1066357600).

Almost surely, 2^12720118124 is an apocalyptic number.

12720118124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12720118124 is an abundant number, since it is smaller than the sum of its proper divisors (12872464276).

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

12720118124 is a wasteful number, since it uses less digits than its factorization.

12720118124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720477 (or 2720475 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The spelling of 12720118124 in words is "twelve billion, seven hundred twenty million, one hundred eighteen thousand, one hundred twenty-four".