13221703340641 has 2 divisors, whose sum is σ = 13221703340642. Its totient is φ = 13221703340640.

The previous prime is 13221703340633. The next prime is 13221703340663. The reversal of 13221703340641 is 14604330712231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13073250333025 + 148453007616 = 3615695^2 + 385296^2 .

It is a cyclic number.

It is not a de Polignac number, because 13221703340641 - 2³ = 13221703340633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13221703340641.

It is not a weakly prime, because it can be changed into another prime (13221703340341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610851670320 + 6610851670321.

It is an arithmetic number, because the mean of its divisors is an integer number (6610851670321).

Almost surely, 2^{13221703340641} is an apocalyptic number.

It is an amenable number.

13221703340641 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221703340641 is an equidigital number, since it uses as much as digits as its factorization.

13221703340641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 13221703340641 in words is "thirteen trillion, two hundred twenty-one billion, seven hundred three million, three hundred forty thousand, six hundred forty-one".