108216117 has 12 divisors (see below), whose sum is σ = 156417664. Its totient is φ = 72095400.

The previous prime is 108216109. The next prime is 108216187. The reversal of 108216117 is 711612801.

It is not a de Polignac number, because 108216117 - 2³ = 108216109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108216107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14478 + ... + 20640.

Almost surely, 2^108216117 is an apocalyptic number.

It is an amenable number.

108216117 is a deficient number, since it is larger than the sum of its proper divisors (48201547).

108216117 is a wasteful number, since it uses less digits than its factorization.

108216117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120 (or 8117 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 108216117 is about 10402.6975828388. The cubic root of 108216117 is about 476.5377561217.

Adding to 108216117 its reverse (711612801), we get a palindrome (819828918).

It can be divided in two parts, 108 and 216117, that added together give a square (216225 = 465²).

The spelling of 108216117 in words is "one hundred eight million, two hundred sixteen thousand, one hundred seventeen".