12117081 has 8 divisors (see below), whose sum is σ = 16176160. Its totient is φ = 8068032.

The previous prime is 12117059. The next prime is 12117121. The reversal of 12117081 is 18071121.

12117081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12117081 - 2⁷ = 12116953 is a prime.

It is a super-2 number, since 2×12117081² = 293647303921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12117011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (2022020).

Almost surely, 2^12117081 is an apocalyptic number.

It is an amenable number.

12117081 is a deficient number, since it is larger than the sum of its proper divisors (4059079).

12117081 is a wasteful number, since it uses less digits than its factorization.

12117081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015.

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

The square root of 12117081 is about 3480.9597814396. The cubic root of 12117081 is about 229.6850193725.

The spelling of 12117081 in words is "twelve million, one hundred seventeen thousand, eighty-one".