13220120233013 has 4 divisors (see below), whose sum is σ = 13223267135628. Its totient is φ = 13216973330400.

The previous prime is 13220120233007. The next prime is 13220120233039. The reversal of 13220120233013 is 31033202102231.

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 3068039502724 + 10152080730289 = 1751582^2 + 3186233^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220120233013 - 2⁸ = 13220120232757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13220120233013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220120233063) 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, 1573445006 + ... + 1573453407.

It is an arithmetic number, because the mean of its divisors is an integer number (3305816783907).

Almost surely, 2^{13220120233013} is an apocalyptic number.

It is an amenable number.

13220120233013 is a deficient number, since it is larger than the sum of its proper divisors (3146902615).

13220120233013 is an equidigital number, since it uses as much as digits as its factorization.

13220120233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146902614.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13220120233013 its reverse (31033202102231), we get a palindrome (44253322335244).

The spelling of 13220120233013 in words is "thirteen trillion, two hundred twenty billion, one hundred twenty million, two hundred thirty-three thousand, thirteen".