12133313121 has 4 divisors (see below), whose sum is σ = 16177750832. Its totient is φ = 8088875412.

The previous prime is 12133313111. The next prime is 12133313123. The reversal of 12133313121 is 12131333121.

It is a happy number.

12133313121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12131333121 = 3 ⋅4043777707.

It is not a de Polignac number, because 12133313121 - 2⁷ = 12133312993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12133313123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022218851 + ... + 2022218856.

It is an arithmetic number, because the mean of its divisors is an integer number (4044437708).

Almost surely, 2^12133313121 is an apocalyptic number.

It is an amenable number.

12133313121 is a deficient number, since it is larger than the sum of its proper divisors (4044437711).

12133313121 is an equidigital number, since it uses as much as digits as its factorization.

12133313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044437710.

The product of its digits is 324, while the sum is 21.

Adding to 12133313121 its reverse (12131333121), we get a palindrome (24264646242).

The spelling of 12133313121 in words is "twelve billion, one hundred thirty-three million, three hundred thirteen thousand, one hundred twenty-one".