12118779 has 12 divisors (see below), whose sum is σ = 17546256. Its totient is φ = 8060112.

The previous prime is 12118753. The next prime is 12118783. The reversal of 12118779 is 97781121.

12118779 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 12118779 - 2⁷ = 12118651 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12118279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3189 + ... + 5865.

It is an arithmetic number, because the mean of its divisors is an integer number (1462188).

Almost surely, 2^12118779 is an apocalyptic number.

12118779 is a deficient number, since it is larger than the sum of its proper divisors (5427477).

12118779 is a wasteful number, since it uses less digits than its factorization.

12118779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186 (or 3183 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 12118779 is about 3481.2036711459. The cubic root of 12118779 is about 229.6957476700.

The spelling of 12118779 in words is "twelve million, one hundred eighteen thousand, seven hundred seventy-nine".