121313514522217 has 2 divisors, whose sum is σ = 121313514522218. Its totient is φ = 121313514522216.

The previous prime is 121313514522181. The next prime is 121313514522229. The reversal of 121313514522217 is 712225415313121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67424642985001 + 53888871537216 = 8211251^2 + 7340904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121313514522217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121313514522217.

It is not a weakly prime, because it can be changed into another prime (121313517522217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656757261108 + 60656757261109.

It is an arithmetic number, because the mean of its divisors is an integer number (60656757261109).

Almost surely, 2^{121313514522217} is an apocalyptic number.

It is an amenable number.

121313514522217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121313514522217 is an equidigital number, since it uses as much as digits as its factorization.

121313514522217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

Adding to 121313514522217 its reverse (712225415313121), we get a palindrome (833538929835338).

The spelling of 121313514522217 in words is "one hundred twenty-one trillion, three hundred thirteen billion, five hundred fourteen million, five hundred twenty-two thousand, two hundred seventeen".