13320031303021 has 2 divisors, whose sum is σ = 13320031303022. Its totient is φ = 13320031303020.

The previous prime is 13320031303013. The next prime is 13320031303031. The reversal of 13320031303021 is 12030313002331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10784885881225 + 2535145421796 = 3284035^2 + 1592214^2 .

It is a cyclic number.

It is not a de Polignac number, because 13320031303021 - 2³ = 13320031303013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13320031302983 and 13320031303001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13320031303031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660015651510 + 6660015651511.

It is an arithmetic number, because the mean of its divisors is an integer number (6660015651511).

Almost surely, 2^{13320031303021} is an apocalyptic number.

It is an amenable number.

13320031303021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320031303021 is an equidigital number, since it uses as much as digits as its factorization.

13320031303021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 13320031303021 its reverse (12030313002331), we get a palindrome (25350344305352).

The spelling of 13320031303021 in words is "thirteen trillion, three hundred twenty billion, thirty-one million, three hundred three thousand, twenty-one".