12218937724 has 36 divisors (see below), whose sum is σ = 24880889880. Its totient is φ = 5235293280.

The previous prime is 12218937713. The next prime is 12218937727. The reversal of 12218937724 is 42773981221.

12218937724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218937727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1119807 + ... + 1130665.

It is an arithmetic number, because the mean of its divisors is an integer number (691135830).

Almost surely, 2^12218937724 is an apocalyptic number.

12218937724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12218937724 is an abundant number, since it is smaller than the sum of its proper divisors (12661952156).

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

12218937724 is a wasteful number, since it uses less digits than its factorization.

12218937724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16618 (or 16609 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The spelling of 12218937724 in words is "twelve billion, two hundred eighteen million, nine hundred thirty-seven thousand, seven hundred twenty-four".