12131441321 has 4 divisors (see below), whose sum is σ = 12211782144. Its totient is φ = 12051100500.

The previous prime is 12131441303. The next prime is 12131441323. The reversal of 12131441321 is 12314413121.

12131441321 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: 12314413121 = 389 ⋅31656589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12131441321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131441323) 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, 40170185 + ... + 40170486.

It is an arithmetic number, because the mean of its divisors is an integer number (3052945536).

Almost surely, 2^12131441321 is an apocalyptic number.

It is an amenable number.

12131441321 is a deficient number, since it is larger than the sum of its proper divisors (80340823).

12131441321 is an equidigital number, since it uses as much as digits as its factorization.

12131441321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80340822.

The product of its digits is 576, while the sum is 23.

Adding to 12131441321 its reverse (12314413121), we get a palindrome (24445854442).

The spelling of 12131441321 in words is "twelve billion, one hundred thirty-one million, four hundred forty-one thousand, three hundred twenty-one".