12131321333 has 4 divisors (see below), whose sum is σ = 12135845568. Its totient is φ = 12126797100.

The previous prime is 12131321303. The next prime is 12131321339. The reversal of 12131321333 is 33312313121.

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: 33312313121 = 1483 ⋅22462787.

It is a cyclic number.

It is not a de Polignac number, because 12131321333 - 2⁶ = 12131321269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131321299 and 12131321308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131321339) 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, 2258093 + ... + 2263458.

It is an arithmetic number, because the mean of its divisors is an integer number (3033961392).

Almost surely, 2^12131321333 is an apocalyptic number.

It is an amenable number.

12131321333 is a deficient number, since it is larger than the sum of its proper divisors (4524235).

12131321333 is an equidigital number, since it uses as much as digits as its factorization.

12131321333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524234.

The product of its digits is 972, while the sum is 23.

Adding to 12131321333 its reverse (33312313121), we get a palindrome (45443634454).

The spelling of 12131321333 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty-three".