12117170 has 32 divisors (see below), whose sum is σ = 23792832. Its totient is φ = 4416192.

The previous prime is 12117121. The next prime is 12117221. The reversal of 12117170 is 7171121.

12117170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10229 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (743526).

Almost surely, 2^12117170 is an apocalyptic number.

12117170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12117170 is a deficient number, since it is larger than the sum of its proper divisors (11675662).

12117170 is a wasteful number, since it uses less digits than its factorization.

With its successor (12117171) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1226).

12117170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226.

The product of its (nonzero) digits is 98, while the sum is 20.

The square root of 12117170 is about 3480.9725652467. The cubic root of 12117170 is about 229.6855817169.

Adding to 12117170 its reverse (7171121), we get a palindrome (19288291).

The spelling of 12117170 in words is "twelve million, one hundred seventeen thousand, one hundred seventy".