12224509 has 12 divisors (see below), whose sum is σ = 13874560. Its totient is φ = 10751400.

The previous prime is 12224501. The next prime is 12224521. The reversal of 12224509 is 90542221.

12224509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12224509 - 2³ = 12224501 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122 + ... + 5380.

Almost surely, 2^12224509 is an apocalyptic number.

It is an amenable number.

12224509 is a deficient number, since it is larger than the sum of its proper divisors (1650051).

12224509 is a wasteful number, since it uses less digits than its factorization.

12224509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3301 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12224509 is about 3496.3565321632. The cubic root of 12224509 is about 230.3618061066.

The spelling of 12224509 in words is "twelve million, two hundred twenty-four thousand, five hundred nine".