12011109 has 16 divisors (see below), whose sum is σ = 17630784. Its totient is φ = 7212800.

The previous prime is 12011099. The next prime is 12011113. The reversal of 12011109 is 90111021.

12011109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12011109 - 2¹³ = 12002917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2119 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (1101924).

Almost surely, 2^12011109 is an apocalyptic number.

It is an amenable number.

12011109 is a deficient number, since it is larger than the sum of its proper divisors (5619675).

12011109 is a wasteful number, since it uses less digits than its factorization.

12011109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 12011109 is about 3465.7046902470. The cubic root of 12011109 is about 229.0134746684.

The spelling of 12011109 in words is "twelve million, eleven thousand, one hundred nine".