12132133121 has 4 divisors (see below), whose sum is σ = 12133580544. Its totient is φ = 12130685700.

The previous prime is 12132133073. The next prime is 12132133159. The reversal of 12132133121 is 12133123121.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12132133121 - 2¹⁸ = 12131870977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12132133093 and 12132133102.

It is not an unprimeable number, because it can be changed into a prime (12132133621) 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, 711065 + ... + 727926.

It is an arithmetic number, because the mean of its divisors is an integer number (3033395136).

Almost surely, 2^12132133121 is an apocalyptic number.

It is an amenable number.

12132133121 is a deficient number, since it is larger than the sum of its proper divisors (1447423).

12132133121 is an equidigital number, since it uses as much as digits as its factorization.

12132133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447422.

The product of its digits is 216, while the sum is 20.

Adding to 12132133121 its reverse (12133123121), we get a palindrome (24265256242).

The spelling of 12132133121 in words is "twelve billion, one hundred thirty-two million, one hundred thirty-three thousand, one hundred twenty-one".