12222616987 has 6 divisors (see below), whose sum is σ = 14218146348. Its totient is φ = 10476528804.

The previous prime is 12222616943. The next prime is 12222616993. The reversal of 12222616987 is 78961622221.

12222616987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12222616987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222616937) 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 5 ways as a sum of consecutive naturals, for example, 124720533 + ... + 124720630.

It is an arithmetic number, because the mean of its divisors is an integer number (2369691058).

Almost surely, 2^12222616987 is an apocalyptic number.

12222616987 is a deficient number, since it is larger than the sum of its proper divisors (1995529361).

12222616987 is an equidigital number, since it uses as much as digits as its factorization.

12222616987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249441177 (or 249441170 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The spelling of 12222616987 in words is "twelve billion, two hundred twenty-two million, six hundred sixteen thousand, nine hundred eighty-seven".