12120109 has 8 divisors (see below), whose sum is σ = 12545280. Its totient is φ = 11701536.

The previous prime is 12120091. The next prime is 12120179. The reversal of 12120109 is 90102121.

12120109 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 a cyclic number.

It is not a de Polignac number, because 12120109 - 2⁵ = 12120077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120092 and 12120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120179) 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, 2244 + ... + 5410.

It is an arithmetic number, because the mean of its divisors is an integer number (1568160).

Almost surely, 2^12120109 is an apocalyptic number.

It is an amenable number.

12120109 is a deficient number, since it is larger than the sum of its proper divisors (425171).

12120109 is an equidigital number, since it uses as much as digits as its factorization.

12120109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 12120109 is about 3481.3946917866. The cubic root of 12120109 is about 229.7041501713.

The spelling of 12120109 in words is "twelve million, one hundred twenty thousand, one hundred nine".