12118985 has 16 divisors (see below), whose sum is σ = 15386112. Its totient is φ = 9148800.

The previous prime is 12118969. The next prime is 12119021. The reversal of 12118985 is 58981121.

12118985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12118985 - 2⁴ = 12118969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5402 + ... + 7308.

It is an arithmetic number, because the mean of its divisors is an integer number (961632).

Almost surely, 2^12118985 is an apocalyptic number.

It is an amenable number.

12118985 is a deficient number, since it is larger than the sum of its proper divisors (3267127).

12118985 is a wasteful number, since it uses less digits than its factorization.

12118985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

The product of its digits is 5760, while the sum is 35.

The square root of 12118985 is about 3481.2332584876. The cubic root of 12118985 is about 229.6970491502.

The spelling of 12118985 in words is "twelve million, one hundred eighteen thousand, nine hundred eighty-five".