12118135 has 4 divisors (see below), whose sum is σ = 14541768. Its totient is φ = 9694504.

The previous prime is 12118111. The next prime is 12118153. The reversal of 12118135 is 53181121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12118135 - 2⁵ = 12118103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211809 + ... + 1211818.

It is an arithmetic number, because the mean of its divisors is an integer number (3635442).

Almost surely, 2^12118135 is an apocalyptic number.

12118135 is a deficient number, since it is larger than the sum of its proper divisors (2423633).

12118135 is an equidigital number, since it uses as much as digits as its factorization.

12118135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423632.

The product of its digits is 240, while the sum is 22.

The square root of 12118135 is about 3481.1111731745. Note that the first 4 decimals coincide. The cubic root of 12118135 is about 229.6916788695.

Adding to 12118135 its reverse (53181121), we get a palindrome (65299256).

The spelling of 12118135 in words is "twelve million, one hundred eighteen thousand, one hundred thirty-five".