1222418 has 8 divisors (see below), whose sum is σ = 1844748. Its totient is φ = 607504.

The previous prime is 1222411. The next prime is 1222433. The reversal of 1222418 is 8142221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1026169 + 196249 = 1013^2 + 443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1222418.

It is not an unprimeable number, because it can be changed into a prime (1222411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421 + ... + 2112.

2^1222418 is an apocalyptic number.

1222418 is a deficient number, since it is larger than the sum of its proper divisors (622330).

1222418 is a wasteful number, since it uses less digits than its factorization.

1222418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708.

The product of its digits is 256, while the sum is 20.

The square root of 1222418 is about 1105.6301370712. The cubic root of 1222418 is about 106.9235194582.

Adding to 1222418 its reverse (8142221), we get a palindrome (9364639).

The spelling of 1222418 in words is "one million, two hundred twenty-two thousand, four hundred eighteen".