1224222245 has 4 divisors (see below), whose sum is σ = 1469066700. Its totient is φ = 979377792.

The previous prime is 1224222229. The next prime is 1224222247. The reversal of 1224222245 is 5422224221.

It is a happy number.

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 635140804 + 589081441 = 25202^2 + 24271^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224222245 - 2⁴ = 1224222229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224222247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122422220 + ... + 122422229.

It is an arithmetic number, because the mean of its divisors is an integer number (367266675).

Almost surely, 2^1224222245 is an apocalyptic number.

It is an amenable number.

1224222245 is a deficient number, since it is larger than the sum of its proper divisors (244844455).

1224222245 is an equidigital number, since it uses as much as digits as its factorization.

1224222245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244844454.

The product of its digits is 5120, while the sum is 26.

The square root of 1224222245 is about 34988.8874501605. The cubic root of 1224222245 is about 1069.7609868795.

Adding to 1224222245 its reverse (5422224221), we get a palindrome (6646446466).

The spelling of 1224222245 in words is "one billion, two hundred twenty-four million, two hundred twenty-two thousand, two hundred forty-five".