12214209 has 16 divisors (see below), whose sum is σ = 18662400. Its totient is φ = 6960720.

The previous prime is 12214183. The next prime is 12214243. The reversal of 12214209 is 90241221.

It is not a de Polignac number, because 12214209 - 2¹² = 12210113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12214289) 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, 12094 + ... + 13064.

It is an arithmetic number, because the mean of its divisors is an integer number (1166400).

Almost surely, 2^12214209 is an apocalyptic number.

It is an amenable number.

12214209 is a deficient number, since it is larger than the sum of its proper divisors (6448191).

12214209 is an equidigital number, since it uses as much as digits as its factorization.

12214209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12214209 is about 3494.8832598529. The cubic root of 12214209 is about 230.2970893066.

The spelling of 12214209 in words is "twelve million, two hundred fourteen thousand, two hundred nine".