12199118 has 4 divisors (see below), whose sum is σ = 18298680. Its totient is φ = 6099558.

The previous prime is 12199097. The next prime is 12199133. The reversal of 12199118 is 81199121.

12199118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81199121 = 6091 ⋅13331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3049778 + ... + 3049781.

It is an arithmetic number, because the mean of its divisors is an integer number (4574670).

Almost surely, 2^12199118 is an apocalyptic number.

12199118 is a deficient number, since it is larger than the sum of its proper divisors (6099562).

12199118 is an equidigital number, since it uses as much as digits as its factorization.

12199118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099561.

The product of its digits is 1296, while the sum is 32.

The square root of 12199118 is about 3492.7235790998. The cubic root of 12199118 is about 230.2022040332.

The spelling of 12199118 in words is "twelve million, one hundred ninety-nine thousand, one hundred eighteen".