1222221244 has 24 divisors (see below), whose sum is σ = 2151122400. Its totient is φ = 607626240.

The previous prime is 1222221233. The next prime is 1222221257. The reversal of 1222221244 is 4421222221.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 586284 + ... + 588364.

It is an arithmetic number, because the mean of its divisors is an integer number (89630100).

Almost surely, 2^1222221244 is an apocalyptic number.

It is an amenable number.

1222221244 is a deficient number, since it is larger than the sum of its proper divisors (928901156).

1222221244 is a wasteful number, since it uses less digits than its factorization.

1222221244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853 (or 2851 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 1222221244 is about 34960.2809485279. The cubic root of 1222221244 is about 1069.1778247548.

Adding to 1222221244 its reverse (4421222221), we get a palindrome (5643443465).

The spelling of 1222221244 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred forty-four".