12222309 has 8 divisors (see below), whose sum is σ = 17777952. Its totient is φ = 7407440.

The previous prime is 12222307. The next prime is 12222319. The reversal of 12222309 is 90322221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12222309 - 2¹ = 12222307 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185154 + ... + 185219.

It is an arithmetic number, because the mean of its divisors is an integer number (2222244).

Almost surely, 2^12222309 is an apocalyptic number.

It is an amenable number.

12222309 is a deficient number, since it is larger than the sum of its proper divisors (5555643).

12222309 is a wasteful number, since it uses less digits than its factorization.

12222309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370387.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12222309 is about 3496.0419047832. The cubic root of 12222309 is about 230.3479861547.

The spelling of 12222309 in words is "twelve million, two hundred twenty-two thousand, three hundred nine".