12133337 has 4 divisors (see below), whose sum is σ = 12141876. Its totient is φ = 12124800.

The previous prime is 12133333. The next prime is 12133367. The reversal of 12133337 is 73333121.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73333121 = 17 ⋅4313713.

It can be written as a sum of positive squares in 2 ways, for example, as 3671056 + 8462281 = 1916^2 + 2909^2 .

It is a cyclic number.

It is not a de Polignac number, because 12133337 - 2² = 12133333 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12133333) 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, 1568 + ... + 5169.

It is an arithmetic number, because the mean of its divisors is an integer number (3035469).

Almost surely, 2^12133337 is an apocalyptic number.

It is an amenable number.

12133337 is a deficient number, since it is larger than the sum of its proper divisors (8539).

12133337 is an equidigital number, since it uses as much as digits as its factorization.

12133337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8538.

The product of its digits is 1134, while the sum is 23.

The square root of 12133337 is about 3483.2939870186. The cubic root of 12133337 is about 229.7876868717.

Adding to 12133337 its reverse (73333121), we get a palindrome (85466458).

The spelling of 12133337 in words is "twelve million, one hundred thirty-three thousand, three hundred thirty-seven".