117217117 has 2 divisors, whose sum is σ = 117217118. Its totient is φ = 117217116.

The previous prime is 117217033. The next prime is 117217127. The reversal of 117217117 is 711712711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81468676 + 35748441 = 9026^2 + 5979^2 .

It is a cyclic number.

It is not a de Polignac number, because 117217117 - 2¹¹ = 117215069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117217127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58608558 + 58608559.

It is an arithmetic number, because the mean of its divisors is an integer number (58608559).

Almost surely, 2^117217117 is an apocalyptic number.

It is an amenable number.

117217117 is a deficient number, since it is larger than the sum of its proper divisors (1).

117217117 is an equidigital number, since it uses as much as digits as its factorization.

117217117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 686, while the sum is 28.

The square root of 117217117 is about 10826.6854115191. The cubic root of 117217117 is about 489.3996771438.

Adding to 117217117 its reverse (711712711), we get a palindrome (828929828).

The spelling of 117217117 in words is "one hundred seventeen million, two hundred seventeen thousand, one hundred seventeen".