1222221322 has 16 divisors (see below), whose sum is σ = 2205512640. Its totient is φ = 496240128.

The previous prime is 1222221317. The next prime is 1222221337. The reversal of 1222221322 is 2231222221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1222221322.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297143 + ... + 2297674.

It is an arithmetic number, because the mean of its divisors is an integer number (137844540).

Almost surely, 2^1222221322 is an apocalyptic number.

1222221322 is a deficient number, since it is larger than the sum of its proper divisors (983291318).

1222221322 is a wasteful number, since it uses less digits than its factorization.

1222221322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594845.

The product of its digits is 384, while the sum is 19.

The square root of 1222221322 is about 34960.2820640795. The cubic root of 1222221322 is about 1069.1778474991.

Adding to 1222221322 its reverse (2231222221), we get a palindrome (3453443543).

The spelling of 1222221322 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred twenty-two".