12111018 has 64 divisors (see below), whose sum is σ = 27648000. Its totient is φ = 3516480.

The previous prime is 12111017. The next prime is 12111019. The reversal of 12111018 is 81011121.

12111018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12111017) and next prime (12111019).

It is a junction number, because it is equal to n+sod(n) for n = 12110988 and 12111006.

It is not an unprimeable number, because it can be changed into a prime (12111017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81208 + ... + 81356.

It is an arithmetic number, because the mean of its divisors is an integer number (432000).

Almost surely, 2^12111018 is an apocalyptic number.

12111018 is an abundant number, since it is smaller than the sum of its proper divisors (15536982).

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

12111018 is a wasteful number, since it uses less digits than its factorization.

12111018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227.

The product of its (nonzero) digits is 16, while the sum is 15.

The square root of 12111018 is about 3480.0887919707. The cubic root of 12111018 is about 229.6467039673.

Adding to 12111018 its reverse (81011121), we get a palindrome (93122139).

The spelling of 12111018 in words is "twelve million, one hundred eleven thousand, eighteen".