12215404024 has 32 divisors (see below), whose sum is σ = 23260832640. Its totient is φ = 6012770400.

The previous prime is 12215403979. The next prime is 12215404031. The reversal of 12215404024 is 42040451221.

It is a self number, because there is not a number n which added to its sum of digits gives 12215404024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376927 + ... + 408049.

It is an arithmetic number, because the mean of its divisors is an integer number (726901020).

Almost surely, 2^12215404024 is an apocalyptic number.

It is an amenable number.

12215404024 is a deficient number, since it is larger than the sum of its proper divisors (11045428616).

12215404024 is a wasteful number, since it uses less digits than its factorization.

12215404024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31891 (or 31887 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12215404024 its reverse (42040451221), we get a palindrome (54255855245).

The spelling of 12215404024 in words is "twelve billion, two hundred fifteen million, four hundred four thousand, twenty-four".