13221240343699 has 2 divisors, whose sum is σ = 13221240343700. Its totient is φ = 13221240343698.

The previous prime is 13221240343679. The next prime is 13221240343711. The reversal of 13221240343699 is 99634304212231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13221240343699 - 2¹¹ = 13221240341651 is a prime.

It is not a weakly prime, because it can be changed into another prime (13221240343679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610620171849 + 6610620171850.

It is an arithmetic number, because the mean of its divisors is an integer number (6610620171850).

Almost surely, 2^{13221240343699} is an apocalyptic number.

13221240343699 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221240343699 is an equidigital number, since it uses as much as digits as its factorization.

13221240343699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 13221240343699 in words is "thirteen trillion, two hundred twenty-one billion, two hundred forty million, three hundred forty-three thousand, six hundred ninety-nine".