1222045444 has 12 divisors (see below), whose sum is σ = 2139220300. Its totient is φ = 610839648.

The previous prime is 1222045417. The next prime is 1222045507. The reversal of 1222045444 is 4445402221.

It can be written as a sum of positive squares in 2 ways, for example, as 454201344 + 767844100 = 21312^2 + 27710^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30159 + ... + 57910.

Almost surely, 2^1222045444 is an apocalyptic number.

It is an amenable number.

1222045444 is a deficient number, since it is larger than the sum of its proper divisors (917174856).

1222045444 is a wasteful number, since it uses less digits than its factorization.

1222045444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91542 (or 91540 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 1222045444 is about 34957.7665762560. The cubic root of 1222045444 is about 1069.1265600390.

Adding to 1222045444 its reverse (4445402221), we get a palindrome (5667447665).

The spelling of 1222045444 in words is "one billion, two hundred twenty-two million, forty-five thousand, four hundred forty-four".