4218222 has 16 divisors (see below), whose sum is σ = 8664912. Its totient is φ = 1368000.

The previous prime is 4218199. The next prime is 4218241. The reversal of 4218222 is 2228124.

It is a happy number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 9279 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (541557).

Almost surely, 2^4218222 is an apocalyptic number.

4218222 is an abundant number, since it is smaller than the sum of its proper divisors (4446690).

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

4218222 is a wasteful number, since it uses less digits than its factorization.

4218222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19043.

The product of its digits is 512, while the sum is 21.

The square root of 4218222 is about 2053.8310543957. The cubic root of 4218222 is about 161.5758604844.

It can be divided in two parts, 4218 and 222, that multiplied together give a triangular number (936396 = T₁₃₆₈).

The spelling of 4218222 in words is "four million, two hundred eighteen thousand, two hundred twenty-two".