218108112 has 40 divisors (see below), whose sum is σ = 564011520. Its totient is φ = 72629760.

The previous prime is 218108071. The next prime is 218108119. The reversal of 218108112 is 211801812.

It is a super-2 number, since 2×218108112² = 95142297040409088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218108119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69064 + ... + 72152.

It is an arithmetic number, because the mean of its divisors is an integer number (14100288).

Almost surely, 2^218108112 is an apocalyptic number.

It is an amenable number.

218108112 is an abundant number, since it is smaller than the sum of its proper divisors (345903408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218108112 is a wasteful number, since it uses less digits than its factorization.

218108112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571 (or 4565 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

The square root of 218108112 is about 14768.4837407230. The cubic root of 218108112 is about 601.9456395471.

Adding to 218108112 its reverse (211801812), we get a palindrome (429909924).

The spelling of 218108112 in words is "two hundred eighteen million, one hundred eight thousand, one hundred twelve".