12215724730 has 64 divisors (see below), whose sum is σ = 24199606656. Its totient is φ = 4402944000.

The previous prime is 12215724727. The next prime is 12215724757. The reversal of 12215724730 is 3742751221.

12215724730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6521074 + ... + 6522946.

It is an arithmetic number, because the mean of its divisors is an integer number (378118854).

Almost surely, 2^12215724730 is an apocalyptic number.

12215724730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215724730 is a deficient number, since it is larger than the sum of its proper divisors (11983881926).

12215724730 is a wasteful number, since it uses less digits than its factorization.

12215724730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 12215724730 in words is "twelve billion, two hundred fifteen million, seven hundred twenty-four thousand, seven hundred thirty".