12012131220313 has 4 divisors (see below), whose sum is σ = 13728149966080. Its totient is φ = 10296112474548.

The previous prime is 12012131220289. The next prime is 12012131220319. The reversal of 12012131220313 is 31302213121021.

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 a de Polignac number, because none of the positive numbers 2^k-12012131220313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012131220319) 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, 858009372873 + ... + 858009372886.

It is an arithmetic number, because the mean of its divisors is an integer number (3432037491520).

Almost surely, 2^{12012131220313} is an apocalyptic number.

It is an amenable number.

12012131220313 is a deficient number, since it is larger than the sum of its proper divisors (1716018745767).

12012131220313 is an equidigital number, since it uses as much as digits as its factorization.

12012131220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716018745766.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12012131220313 its reverse (31302213121021), we get a palindrome (43314344341334).

The spelling of 12012131220313 in words is "twelve trillion, twelve billion, one hundred thirty-one million, two hundred twenty thousand, three hundred thirteen".