12220109 has 4 divisors (see below), whose sum is σ = 13331040. Its totient is φ = 11109180.

The previous prime is 12220081. The next prime is 12220111. The reversal of 12220109 is 90102221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555449 + ... + 555470.

It is an arithmetic number, because the mean of its divisors is an integer number (3332760).

Almost surely, 2^12220109 is an apocalyptic number.

It is an amenable number.

12220109 is a deficient number, since it is larger than the sum of its proper divisors (1110931).

12220109 is a wasteful number, since it uses less digits than its factorization.

12220109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110930.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12220109 is about 3495.7272490857. The cubic root of 12220109 is about 230.3341645443.

The spelling of 12220109 in words is "twelve million, two hundred twenty thousand, one hundred nine".