12229109 has 4 divisors (see below), whose sum is σ = 12242604. Its totient is φ = 12215616.

The previous prime is 12229093. The next prime is 12229117. The reversal of 12229109 is 90192221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11458225 + 770884 = 3385^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 12229109 - 2⁴ = 12229093 is a prime.

It is a super-2 number, since 2×12229109² = 299102213867762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12229709) 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, 5282 + ... + 7235.

It is an arithmetic number, because the mean of its divisors is an integer number (3060651).

Almost surely, 2^12229109 is an apocalyptic number.

It is an amenable number.

12229109 is a deficient number, since it is larger than the sum of its proper divisors (13495).

12229109 is an equidigital number, since it uses as much as digits as its factorization.

12229109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13494.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12229109 is about 3497.0142979405. The cubic root of 12229109 is about 230.3906970126.

The spelling of 12229109 in words is "twelve million, two hundred twenty-nine thousand, one hundred nine".