12133311 has 4 divisors (see below), whose sum is σ = 16177752. Its totient is φ = 8088872.

The previous prime is 12133309. The next prime is 12133321. The reversal of 12133311 is 11333121.

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 12133311 - 2¹ = 12133309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022216 + ... + 2022221.

It is an arithmetic number, because the mean of its divisors is an integer number (4044438).

Almost surely, 2^12133311 is an apocalyptic number.

12133311 is a deficient number, since it is larger than the sum of its proper divisors (4044441).

12133311 is an equidigital number, since it uses as much as digits as its factorization.

12133311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044440.

The product of its digits is 54, while the sum is 15.

The square root of 12133311 is about 3483.2902549170. The cubic root of 12133311 is about 229.7875227375.

Adding to 12133311 its reverse (11333121), we get a palindrome (23466432).

It can be divided in two parts, 1 and 2133311, that added together give a palindrome (2133312).

The spelling of 12133311 in words is "twelve million, one hundred thirty-three thousand, three hundred eleven".