13200620021 has 2 divisors, whose sum is σ = 13200620022. Its totient is φ = 13200620020.

The previous prime is 13200619967. The next prime is 13200620029. The reversal of 13200620021 is 12002600231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6770985796 + 6429634225 = 82286^2 + 80185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13200620021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13200620029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600310010 + 6600310011.

It is an arithmetic number, because the mean of its divisors is an integer number (6600310011).

Almost surely, 2^13200620021 is an apocalyptic number.

It is an amenable number.

13200620021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13200620021 is an equidigital number, since it uses as much as digits as its factorization.

13200620021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The spelling of 13200620021 in words is "thirteen billion, two hundred million, six hundred twenty thousand, twenty-one".