12214009 has 4 divisors (see below), whose sum is σ = 12444516. Its totient is φ = 11983504.

The previous prime is 12213991. The next prime is 12214019. The reversal of 12214009 is 90041221.

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 9903609 + 2310400 = 3147^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12214009 - 2⁷ = 12213881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12214019) 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, 115174 + ... + 115279.

It is an arithmetic number, because the mean of its divisors is an integer number (3111129).

Almost surely, 2^12214009 is an apocalyptic number.

It is an amenable number.

12214009 is a deficient number, since it is larger than the sum of its proper divisors (230507).

12214009 is an equidigital number, since it uses as much as digits as its factorization.

12214009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230506.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12214009 is about 3494.8546464767. The cubic root of 12214009 is about 230.2958323097.

Adding to 12214009 its product of nonzero digits (144), we get a triangular number (12214153 = T₄₉₄₂).

The spelling of 12214009 in words is "twelve million, two hundred fourteen thousand, nine".