1224122644 has 24 divisors (see below), whose sum is σ = 2174594688. Its totient is φ = 602827680.

The previous prime is 1224122593. The next prime is 1224122651. The reversal of 1224122644 is 4462214221.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 422569 + ... + 425455.

It is an arithmetic number, because the mean of its divisors is an integer number (90608112).

Almost surely, 2^1224122644 is an apocalyptic number.

It is an amenable number.

1224122644 is a deficient number, since it is larger than the sum of its proper divisors (950472044).

1224122644 is a wasteful number, since it uses less digits than its factorization.

1224122644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455 (or 4453 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 1224122644 is about 34987.4640978737. The cubic root of 1224122644 is about 1069.7319746763.

Adding to 1224122644 its reverse (4462214221), we get a palindrome (5686336865).

The spelling of 1224122644 in words is "one billion, two hundred twenty-four million, one hundred twenty-two thousand, six hundred forty-four".