12220132865 has 8 divisors (see below), whose sum is σ = 15526757160. Its totient is φ = 9201041152.

The previous prime is 12220132819. The next prime is 12220132889. The reversal of 12220132865 is 56823102221.

It can be written as a sum of positive squares in 4 ways, for example, as 4115992336 + 8104140529 = 64156^2 + 90023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220132865 - 2⁸ = 12220132609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71883050 + ... + 71883219.

It is an arithmetic number, because the mean of its divisors is an integer number (1940844645).

Almost surely, 2^12220132865 is an apocalyptic number.

It is an amenable number.

12220132865 is a deficient number, since it is larger than the sum of its proper divisors (3306624295).

12220132865 is a wasteful number, since it uses less digits than its factorization.

12220132865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143766291.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 12220132865 in words is "twelve billion, two hundred twenty million, one hundred thirty-two thousand, eight hundred sixty-five".