117112217 has 2 divisors, whose sum is σ = 117112218. Its totient is φ = 117112216.

The previous prime is 117112213. The next prime is 117112267. The reversal of 117112217 is 712211711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68823616 + 48288601 = 8296^2 + 6949^2 .

It is a cyclic number.

It is not a de Polignac number, because 117112217 - 2² = 117112213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117112192 and 117112201.

It is not a weakly prime, because it can be changed into another prime (117112213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58556108 + 58556109.

It is an arithmetic number, because the mean of its divisors is an integer number (58556109).

Almost surely, 2^117112217 is an apocalyptic number.

It is an amenable number.

117112217 is a deficient number, since it is larger than the sum of its proper divisors (1).

117112217 is an equidigital number, since it uses as much as digits as its factorization.

117112217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196, while the sum is 23.

The square root of 117112217 is about 10821.8398158539. The cubic root of 117112217 is about 489.2536423053.

Adding to 117112217 its reverse (712211711), we get a palindrome (829323928).

The spelling of 117112217 in words is "one hundred seventeen million, one hundred twelve thousand, two hundred seventeen".