1122218 has 4 divisors (see below), whose sum is σ = 1683330. Its totient is φ = 561108.

The previous prime is 1122181. The next prime is 1122227. The reversal of 1122218 is 8122211.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 677329 + 444889 = 823^2 + 667^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1122196 and 1122205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280553 + ... + 280556.

2^1122218 is an apocalyptic number.

1122218 is a deficient number, since it is larger than the sum of its proper divisors (561112).

1122218 is an equidigital number, since it uses as much as digits as its factorization.

1122218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561111.

The product of its digits is 64, while the sum is 17.

The square root of 1122218 is about 1059.3479126330. The cubic root of 1122218 is about 103.9183901186.

Adding to 1122218 its reverse (8122211), we get a palindrome (9244429).

The spelling of 1122218 in words is "one million, one hundred twenty-two thousand, two hundred eighteen".