12131322133 has 4 divisors (see below), whose sum is σ = 13864368160. Its totient is φ = 10398276108.

The previous prime is 12131322121. The next prime is 12131322167. The reversal of 12131322133 is 33122313121.

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 12131322133 - 2⁹ = 12131321621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131322173) 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, 866523003 + ... + 866523016.

It is an arithmetic number, because the mean of its divisors is an integer number (3466092040).

Almost surely, 2^12131322133 is an apocalyptic number.

It is an amenable number.

12131322133 is a deficient number, since it is larger than the sum of its proper divisors (1733046027).

12131322133 is an equidigital number, since it uses as much as digits as its factorization.

12131322133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733046026.

The product of its digits is 648, while the sum is 22.

Adding to 12131322133 its reverse (33122313121), we get a palindrome (45253635254).

The spelling of 12131322133 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-two thousand, one hundred thirty-three".