12210109 has 4 divisors (see below), whose sum is σ = 12417120. Its totient is φ = 12003100.

The previous prime is 12210101. The next prime is 12210113. The reversal of 12210109 is 90101221.

12210109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 12210109 - 2³ = 12210101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210092 and 12210101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210101) 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, 103417 + ... + 103534.

It is an arithmetic number, because the mean of its divisors is an integer number (3104280).

Almost surely, 2^12210109 is an apocalyptic number.

It is an amenable number.

12210109 is a deficient number, since it is larger than the sum of its proper divisors (207011).

12210109 is an equidigital number, since it uses as much as digits as its factorization.

12210109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207010.

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

The square root of 12210109 is about 3494.2966388102. The cubic root of 12210109 is about 230.2713181266.

The spelling of 12210109 in words is "twelve million, two hundred ten thousand, one hundred nine".