33020120331013 has 4 divisors (see below), whose sum is σ = 33643141469388. Its totient is φ = 32397099192640.

The previous prime is 33020120330999. The next prime is 33020120331067. The reversal of 33020120331013 is 31013302102033.

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 16570622914209 + 16449497416804 = 4070703^2 + 4055798^2 .

It is a cyclic number.

It is not a de Polignac number, because 33020120331013 - 2²⁵ = 33020086776581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33020120331413) 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, 311510569108 + ... + 311510569213.

It is an arithmetic number, because the mean of its divisors is an integer number (8410785367347).

Almost surely, 2^{33020120331013} is an apocalyptic number.

It is an amenable number.

33020120331013 is a deficient number, since it is larger than the sum of its proper divisors (623021138375).

33020120331013 is an equidigital number, since it uses as much as digits as its factorization.

33020120331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623021138374.

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

Adding to 33020120331013 its reverse (31013302102033), we get a palindrome (64033422433046).

The spelling of 33020120331013 in words is "thirty-three trillion, twenty billion, one hundred twenty million, three hundred thirty-one thousand, thirteen".