13200226938721 has 2 divisors, whose sum is σ = 13200226938722. Its totient is φ = 13200226938720.

The previous prime is 13200226938709. The next prime is 13200226938779. The reversal of 13200226938721 is 12783962200231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10542593388096 + 2657633550625 = 3246936^2 + 1630225^2 .

It is a cyclic number.

It is not a de Polignac number, because 13200226938721 - 2⁷ = 13200226938593 is a prime.

It is not a weakly prime, because it can be changed into another prime (13200226918721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600113469360 + 6600113469361.

It is an arithmetic number, because the mean of its divisors is an integer number (6600113469361).

Almost surely, 2^{13200226938721} is an apocalyptic number.

It is an amenable number.

13200226938721 is a deficient number, since it is larger than the sum of its proper divisors (1).

13200226938721 is an equidigital number, since it uses as much as digits as its factorization.

13200226938721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 13200226938721 in words is "thirteen trillion, two hundred billion, two hundred twenty-six million, nine hundred thirty-eight thousand, seven hundred twenty-one".