12118720 has 28 divisors (see below), whose sum is σ = 28858464. Its totient is φ = 4847360.

The previous prime is 12118693. The next prime is 12118727. The reversal of 12118720 is 2781121.

It is a junction number, because it is equal to n+sod(n) for n = 12118691 and 12118700.

It is not an unprimeable number, because it can be changed into a prime (12118727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18616 + ... + 19255.

Almost surely, 2^12118720 is an apocalyptic number.

12118720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12118720 is an abundant number, since it is smaller than the sum of its proper divisors (16739744).

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

12118720 is an equidigital number, since it uses as much as digits as its factorization.

12118720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37888 (or 37878 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12118720 is about 3481.1951970552. The cubic root of 12118720 is about 229.6953749132.

Adding to 12118720 its reverse (2781121), we get a palindrome (14899841).

The spelling of 12118720 in words is "twelve million, one hundred eighteen thousand, seven hundred twenty".