12321116985 has 16 divisors (see below), whose sum is σ = 19905185664. Its totient is φ = 6507462912.

The previous prime is 12321116971. The next prime is 12321117037. The reversal of 12321116985 is 58961112321.

It is not a de Polignac number, because 12321116985 - 2⁵ = 12321116953 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3985872 + ... + 3988961.

It is an arithmetic number, because the mean of its divisors is an integer number (1244074104).

Almost surely, 2^12321116985 is an apocalyptic number.

12321116985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12321116985 is a deficient number, since it is larger than the sum of its proper divisors (7584068679).

12321116985 is a wasteful number, since it uses less digits than its factorization.

12321116985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7974944.

The product of its digits is 25920, while the sum is 39.

The spelling of 12321116985 in words is "twelve billion, three hundred twenty-one million, one hundred sixteen thousand, nine hundred eighty-five".