12215882868 has 72 divisors (see below), whose sum is σ = 33783093792. Its totient is φ = 3424389696.

The previous prime is 12215882867. The next prime is 12215882881. The reversal of 12215882868 is 86828851221.

It is a happy number.

12215882868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12215882868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215882863) 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 23 ways as a sum of consecutive naturals, for example, 164830 + ... + 227157.

It is an arithmetic number, because the mean of its divisors is an integer number (469209636).

Almost surely, 2^12215882868 is an apocalyptic number.

It is an amenable number.

12215882868 is an abundant number, since it is smaller than the sum of its proper divisors (21567210924).

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

12215882868 is a wasteful number, since it uses less digits than its factorization.

12215882868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392061 (or 392052 counting only the distinct ones).

The product of its digits is 983040, while the sum is 51.

The spelling of 12215882868 in words is "twelve billion, two hundred fifteen million, eight hundred eighty-two thousand, eight hundred sixty-eight".