12117712 has 20 divisors (see below), whose sum is σ = 23810976. Its totient is φ = 5972960.

The previous prime is 12117709. The next prime is 12117713. The reversal of 12117712 is 21771121.

12117712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12117712² = 293677888229888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117713) 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, 4198 + ... + 6469.

Almost surely, 2^12117712 is an apocalyptic number.

It is an amenable number.

12117712 is a deficient number, since it is larger than the sum of its proper divisors (11693264).

12117712 is a wasteful number, since it uses less digits than its factorization.

12117712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10746 (or 10740 counting only the distinct ones).

The product of its digits is 196, while the sum is 22.

The square root of 12117712 is about 3481.0504161819. The cubic root of 12117712 is about 229.6890062715.

Adding to 12117712 its reverse (21771121), we get a palindrome (33888833).

The spelling of 12117712 in words is "twelve million, one hundred seventeen thousand, seven hundred twelve".