221422005013717 has 2 divisors, whose sum is σ = 221422005013718. Its totient is φ = 221422005013716.

The previous prime is 221422005013679. The next prime is 221422005013747. The reversal of 221422005013717 is 717310500224122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128847607423236 + 92574397590481 = 11351106^2 + 9621559^2 .

It is a cyclic number.

It is not a de Polignac number, because 221422005013717 - 2⁴³ = 212625911991509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221422005013747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110711002506858 + 110711002506859.

It is an arithmetic number, because the mean of its divisors is an integer number (110711002506859).

Almost surely, 2^{221422005013717} is an apocalyptic number.

It is an amenable number.

221422005013717 is a deficient number, since it is larger than the sum of its proper divisors (1).

221422005013717 is an equidigital number, since it uses as much as digits as its factorization.

221422005013717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

Adding to 221422005013717 its reverse (717310500224122), we get a palindrome (938732505237839).

The spelling of 221422005013717 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, five million, thirteen thousand, seven hundred seventeen".