118812 has 12 divisors (see below), whose sum is σ = 277256. Its totient is φ = 39600.

The previous prime is 118801. The next prime is 118819. The reversal of 118812 is 218811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118819) by changing a digit.

118812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 4939 + ... + 4962.

2¹¹⁸⁸¹² is an apocalyptic number.

118812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

118812 is an abundant number, since it is smaller than the sum of its proper divisors (158444).

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

118812 is a wasteful number, since it uses less digits than its factorization.

118812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9908 (or 9906 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

The square root of 118812 is about 344.6911661183. The cubic root of 118812 is about 49.1609313748.

Subtracting 118812 from its reverse (218811), we obtain a palindrome (99999).

The spelling of 118812 in words is "one hundred eighteen thousand, eight hundred twelve".