117218 has 16 divisors (see below), whose sum is σ = 190080. Its totient is φ = 54096.

The previous prime is 117209. The next prime is 117223. The reversal of 117218 is 812711.

It is a plaindrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 117218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471 + ... + 2517.

It is an arithmetic number, because the mean of its divisors is an integer number (11880).

2¹¹⁷²¹⁸ is an apocalyptic number.

117218 is a deficient number, since it is larger than the sum of its proper divisors (72862).

117218 is a wasteful number, since it uses less digits than its factorization.

117218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121.

The product of its digits is 112, while the sum is 20.

The square root of 117218 is about 342.3711436439. The cubic root of 117218 is about 48.9400906028.

Adding to 117218 its reverse (812711), we get a palindrome (929929).

The spelling of 117218 in words is "one hundred seventeen thousand, two hundred eighteen".