13202020330021 has 4 divisors (see below), whose sum is σ = 13323139782700. Its totient is φ = 13080900877344.

The previous prime is 13202020330013. The next prime is 13202020330067. The reversal of 13202020330021 is 12003302020231.

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 4654758785121 + 8547261544900 = 2157489^2 + 2923570^2 .

It is a cyclic number.

It is not a de Polignac number, because 13202020330021 - 2³ = 13202020330013 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 (13202020331021) 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, 60559726176 + ... + 60559726393.

It is an arithmetic number, because the mean of its divisors is an integer number (3330784945675).

Almost surely, 2^{13202020330021} is an apocalyptic number.

It is an amenable number.

13202020330021 is a deficient number, since it is larger than the sum of its proper divisors (121119452679).

13202020330021 is a wasteful number, since it uses less digits than its factorization.

13202020330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121119452678.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13202020330021 its reverse (12003302020231), we get a palindrome (25205322350252).

The spelling of 13202020330021 in words is "thirteen trillion, two hundred two billion, twenty million, three hundred thirty thousand, twenty-one".