12118133 has 4 divisors (see below), whose sum is σ = 12126060. Its totient is φ = 12110208.

The previous prime is 12118111. The next prime is 12118153. The reversal of 12118133 is 33181121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7091569 + 5026564 = 2663^2 + 2242^2 .

It is a cyclic number.

It is not a de Polignac number, because 12118133 - 2¹⁸ = 11855989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12118103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (3031515).

Almost surely, 2^12118133 is an apocalyptic number.

It is an amenable number.

12118133 is a deficient number, since it is larger than the sum of its proper divisors (7927).

12118133 is an equidigital number, since it uses as much as digits as its factorization.

12118133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926.

The product of its digits is 144, while the sum is 20.

The square root of 12118133 is about 3481.1108859098. The cubic root of 12118133 is about 229.6916662332.

Adding to 12118133 its reverse (33181121), we get a palindrome (45299254).

The spelling of 12118133 in words is "twelve million, one hundred eighteen thousand, one hundred thirty-three".