12013303121213 has 4 divisors (see below), whose sum is σ = 12177868917468. Its totient is φ = 11848737324960.

The previous prime is 12013303121203. The next prime is 12013303121219. The reversal of 12013303121213 is 31212130331021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8292890948644 + 3720412172569 = 2879738^2 + 1928837^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013303121213 - 2²⁴ = 12013286343997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013303121219) 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, 82282898018 + ... + 82282898163.

It is an arithmetic number, because the mean of its divisors is an integer number (3044467229367).

Almost surely, 2^{12013303121213} is an apocalyptic number.

It is an amenable number.

12013303121213 is a deficient number, since it is larger than the sum of its proper divisors (164565796255).

12013303121213 is an equidigital number, since it uses as much as digits as its factorization.

12013303121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164565796254.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12013303121213 its reverse (31212130331021), we get a palindrome (43225433452234).

The spelling of 12013303121213 in words is "twelve trillion, thirteen billion, three hundred three million, one hundred twenty-one thousand, two hundred thirteen".