12118 has 8 divisors (see below), whose sum is σ = 18648. Its totient is φ = 5904.

The previous prime is 12113. The next prime is 12119. The reversal of 12118 is 81121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12098 and 12107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105 + ... + 187.

It is an arithmetic number, because the mean of its divisors is an integer number (2331).

2¹²¹¹⁸ is an apocalyptic number.

12118 is a deficient number, since it is larger than the sum of its proper divisors (6530).

12118 is an equidigital number, since it uses as much as digits as its factorization.

12118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158.

The product of its digits is 16, while the sum is 13.

The square root of 12118 is about 110.0817877762. The cubic root of 12118 is about 22.9690825919.

Adding to 12118 its reverse (81121), we get a palindrome (93239).

The spelling of 12118 in words is "twelve thousand, one hundred eighteen".