12118899 has 8 divisors (see below), whose sum is σ = 17401552. Its totient is φ = 7457760.

The previous prime is 12118891. The next prime is 12118921. The reversal of 12118899 is 99881121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12118899 - 2³ = 12118891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 310741 = 12118899 / (1 + 2 + 1 + 1 + 8 + 8 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12118891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155332 + ... + 155409.

It is an arithmetic number, because the mean of its divisors is an integer number (2175194).

Almost surely, 2^12118899 is an apocalyptic number.

12118899 is a deficient number, since it is larger than the sum of its proper divisors (5282653).

12118899 is a wasteful number, since it uses less digits than its factorization.

12118899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310757.

The product of its digits is 10368, while the sum is 39.

The square root of 12118899 is about 3481.2209065212. The cubic root of 12118899 is about 229.6965058156.

The spelling of 12118899 in words is "twelve million, one hundred eighteen thousand, eight hundred ninety-nine".