1222213222 has 4 divisors (see below), whose sum is σ = 1833319836. Its totient is φ = 611106610.

The previous prime is 1222213219. The next prime is 1222213243. The reversal of 1222213222 is 2223122221.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1222213222.

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 as a sum of consecutive naturals, namely, 305553304 + ... + 305553307.

It is an arithmetic number, because the mean of its divisors is an integer number (458329959).

Almost surely, 2^1222213222 is an apocalyptic number.

1222213222 is a deficient number, since it is larger than the sum of its proper divisors (611106614).

1222213222 is an equidigital number, since it uses as much as digits as its factorization.

1222213222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611106613.

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

The square root of 1222213222 is about 34960.1662181403. The cubic root of 1222213222 is about 1069.1754855811.

Adding to 1222213222 its reverse (2223122221), we get a palindrome (3445335443).

The spelling of 1222213222 in words is "one billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred twenty-two".