12133312 has 14 divisors (see below), whose sum is σ = 24077168. Its totient is φ = 6066624.

The previous prime is 12133309. The next prime is 12133321. The reversal of 12133312 is 21333121.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 94728 + ... + 94855.

Almost surely, 2^12133312 is an apocalyptic number.

It is an amenable number.

12133312 is a deficient number, since it is larger than the sum of its proper divisors (11943856).

12133312 is an equidigital number, since it uses as much as digits as its factorization.

12133312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189595 (or 189585 counting only the distinct ones).

The product of its digits is 108, while the sum is 16.

The square root of 12133312 is about 3483.2903984595. The cubic root of 12133312 is about 229.7875290504.

Adding to 12133312 its reverse (21333121), we get a palindrome (33466433).

It can be divided in two parts, 121 and 33312, that added together give a palindrome (33433).

The spelling of 12133312 in words is "twelve million, one hundred thirty-three thousand, three hundred twelve".