12222365 has 4 divisors (see below), whose sum is σ = 14666844. Its totient is φ = 9777888.

The previous prime is 12222349. The next prime is 12222367. The reversal of 12222365 is 56322221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3916441 + 8305924 = 1979^2 + 2882^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222365 - 2⁴ = 12222349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12222365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222232 + ... + 1222241.

It is an arithmetic number, because the mean of its divisors is an integer number (3666711).

Almost surely, 2^12222365 is an apocalyptic number.

It is an amenable number.

12222365 is a deficient number, since it is larger than the sum of its proper divisors (2444479).

12222365 is an equidigital number, since it uses as much as digits as its factorization.

12222365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444478.

The product of its digits is 1440, while the sum is 23.

The square root of 12222365 is about 3496.0499138313. The cubic root of 12222365 is about 230.3483379559.

Adding to 12222365 its reverse (56322221), we get a palindrome (68544586).

The spelling of 12222365 in words is "twelve million, two hundred twenty-two thousand, three hundred sixty-five".