12017118 has 8 divisors (see below), whose sum is σ = 24034248. Its totient is φ = 4005704.

The previous prime is 12017111. The next prime is 12017123. The reversal of 12017118 is 81171021.

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

12017118 is an admirable number.

It is a super-2 number, since 2×12017118² = 288822250051848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12017094 and 12017103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12017111) 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 3 ways as a sum of consecutive naturals, for example, 1001421 + ... + 1001432.

It is an arithmetic number, because the mean of its divisors is an integer number (3004281).

Almost surely, 2^12017118 is an apocalyptic number.

12017118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12017118 is a wasteful number, since it uses less digits than its factorization.

12017118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002858.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 12017118 is about 3466.5715051041. The cubic root of 12017118 is about 229.0516591121.

Adding to 12017118 its reverse (81171021), we get a palindrome (93188139).

The spelling of 12017118 in words is "twelve million, seventeen thousand, one hundred eighteen".