13320031213021 has 8 divisors (see below), whose sum is σ = 14361387224184. Its totient is φ = 12281066376960.

The previous prime is 13320031213001. The next prime is 13320031213039. The reversal of 13320031213021 is 12031213002331.

It can be written as a sum of positive squares in 4 ways, for example, as 4511422728121 + 8808608484900 = 2124011^2 + 2967930^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13320031213021 - 2²³ = 13320022824413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13320031212983 and 13320031213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320031213001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597782200 + ... + 597804481.

It is an arithmetic number, because the mean of its divisors is an integer number (1795173403023).

Almost surely, 2^{13320031213021} is an apocalyptic number.

It is an amenable number.

13320031213021 is a deficient number, since it is larger than the sum of its proper divisors (1041356011163).

13320031213021 is a wasteful number, since it uses less digits than its factorization.

13320031213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195587551.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13320031213021 its reverse (12031213002331), we get a palindrome (25351244215352).

The spelling of 13320031213021 in words is "thirteen trillion, three hundred twenty billion, thirty-one million, two hundred thirteen thousand, twenty-one".