12722245 has 16 divisors (see below), whose sum is σ = 15874560. Its totient is φ = 9777600.

The previous prime is 12722233. The next prime is 12722249. The reversal of 12722245 is 54222721.

It is not a de Polignac number, because 12722245 - 2¹⁵ = 12689477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32511 + ... + 32899.

It is an arithmetic number, because the mean of its divisors is an integer number (992160).

Almost surely, 2^12722245 is an apocalyptic number.

It is an amenable number.

12722245 is a deficient number, since it is larger than the sum of its proper divisors (3152315).

12722245 is a wasteful number, since it uses less digits than its factorization.

12722245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its digits is 2240, while the sum is 25.

The square root of 12722245 is about 3566.8256195110. The cubic root of 12722245 is about 233.4467962914.

Adding to 12722245 its reverse (54222721), we get a palindrome (66944966).

The spelling of 12722245 in words is "twelve million, seven hundred twenty-two thousand, two hundred forty-five".