12222345 has 8 divisors (see below), whose sum is σ = 19555776. Its totient is φ = 6518576.

The previous prime is 12222319. The next prime is 12222349. The reversal of 12222345 is 54322221.

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 12222345 - 2²⁰ = 11173769 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12222349) 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, 407397 + ... + 407426.

It is an arithmetic number, because the mean of its divisors is an integer number (2444472).

Almost surely, 2^12222345 is an apocalyptic number.

12222345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12222345 is a deficient number, since it is larger than the sum of its proper divisors (7333431).

12222345 is an equidigital number, since it uses as much as digits as its factorization.

12222345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814831.

The product of its digits is 960, while the sum is 21.

The square root of 12222345 is about 3496.0470534591. The cubic root of 12222345 is about 230.3482123127.

Adding to 12222345 its reverse (54322221), we get a palindrome (66544566).

The spelling of 12222345 in words is "twelve million, two hundred twenty-two thousand, three hundred forty-five".