1222243444 has 12 divisors (see below), whose sum is σ = 2166001600. Its totient is φ = 603385848.

The previous prime is 1222243439. The next prime is 1222243471. The reversal of 1222243444 is 4443422221.

It is a super-2 number, since 2×1222243444² = 2987758072801962272, which contains 22 as substring.

It is a congruent number.

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, 1933614 + ... + 1934245.

Almost surely, 2^1222243444 is an apocalyptic number.

It is an amenable number.

1222243444 is a deficient number, since it is larger than the sum of its proper divisors (943758156).

1222243444 is a wasteful number, since it uses less digits than its factorization.

1222243444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867942 (or 3867940 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 1222243444 is about 34960.5984502554. The cubic root of 1222243444 is about 1069.1842981065.

Adding to 1222243444 its reverse (4443422221), we get a palindrome (5665665665).

The spelling of 1222243444 in words is "one billion, two hundred twenty-two million, two hundred forty-three thousand, four hundred forty-four".