12222255 has 16 divisors (see below), whose sum is σ = 19603584. Its totient is φ = 6502560.

The previous prime is 12222241. The next prime is 12222257. The reversal of 12222255 is 55222221.

It is not a de Polignac number, because 12222255 - 2⁷ = 12222127 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222257) 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 15 ways as a sum of consecutive naturals, for example, 7852 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (1225224).

Almost surely, 2^12222255 is an apocalyptic number.

12222255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12222255 is a deficient number, since it is larger than the sum of its proper divisors (7381329).

12222255 is a wasteful number, since it uses less digits than its factorization.

12222255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006.

The product of its digits is 800, while the sum is 21.

The square root of 12222255 is about 3496.0341817551. The cubic root of 12222255 is about 230.3476469168.

Adding to 12222255 its reverse (55222221), we get a palindrome (67444476).

The spelling of 12222255 in words is "twelve million, two hundred twenty-two thousand, two hundred fifty-five".