12240642100 has 36 divisors (see below), whose sum is σ = 26572322700. Its totient is φ = 4894389760.

The previous prime is 12240642097. The next prime is 12240642133. The reversal of 12240642100 is 124604221.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 464919844 + 11775722256 = 21562^2 + 108516^2 .

It is a congruent number.

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, 256956 + ... + 300844.

It is an arithmetic number, because the mean of its divisors is an integer number (738120075).

Almost surely, 2^12240642100 is an apocalyptic number.

12240642100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12240642100 is an abundant number, since it is smaller than the sum of its proper divisors (14331680600).

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

12240642100 is a wasteful number, since it uses less digits than its factorization.

12240642100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46692 (or 46685 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The spelling of 12240642100 in words is "twelve billion, two hundred forty million, six hundred forty-two thousand, one hundred".