12101109 has 16 divisors (see below), whose sum is σ = 16981440. Its totient is φ = 7655040.

The previous prime is 12101099. The next prime is 12101123. The reversal of 12101109 is 90110121.

It is not a de Polignac number, because 12101109 - 2¹⁹ = 11576821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3222 + ... + 5880.

It is an arithmetic number, because the mean of its divisors is an integer number (1061340).

Almost surely, 2^12101109 is an apocalyptic number.

It is an amenable number.

12101109 is a deficient number, since it is larger than the sum of its proper divisors (4880331).

12101109 is a wasteful number, since it uses less digits than its factorization.

12101109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740.

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

The square root of 12101109 is about 3478.6648300749. The cubic root of 12101109 is about 229.5840560523.

The spelling of 12101109 in words is "twelve million, one hundred one thousand, one hundred nine".