12445222 has 8 divisors (see below), whose sum is σ = 19123272. Its totient is φ = 6070800.

The previous prime is 12445187. The next prime is 12445249. The reversal of 12445222 is 22254421.

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

It is a junction number, because it is equal to n+sod(n) for n = 12445193 and 12445202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75804 + ... + 75967.

It is an arithmetic number, because the mean of its divisors is an integer number (2390409).

Almost surely, 2^12445222 is an apocalyptic number.

12445222 is a deficient number, since it is larger than the sum of its proper divisors (6678050).

12445222 is a wasteful number, since it uses less digits than its factorization.

12445222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151814.

The product of its digits is 1280, while the sum is 22.

The square root of 12445222 is about 3527.7786211723. The cubic root of 12445222 is about 231.7399359940.

Adding to 12445222 its reverse (22254421), we get a palindrome (34699643).

The spelling of 12445222 in words is "twelve million, four hundred forty-five thousand, two hundred twenty-two".