1222213044 has 24 divisors (see below), whose sum is σ = 3071202400. Its totient is φ = 376065504.

The previous prime is 1222213009. The next prime is 1222213061. The reversal of 1222213044 is 4403122221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222213044.

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, 3917194 + ... + 3917505.

Almost surely, 2^1222213044 is an apocalyptic number.

It is an amenable number.

1222213044 is an abundant number, since it is smaller than the sum of its proper divisors (1848989356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222213044 is a wasteful number, since it uses less digits than its factorization.

1222213044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834719 (or 7834717 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1222213044 is about 34960.1636723857. The cubic root of 1222213044 is about 1069.1754336771.

Adding to 1222213044 its reverse (4403122221), we get a palindrome (5625335265).

The spelling of 1222213044 in words is "one billion, two hundred twenty-two million, two hundred thirteen thousand, forty-four".