2222218 has 8 divisors (see below), whose sum is σ = 3342240. Its totient is φ = 1108140.

The previous prime is 2222203. The next prime is 2222219. The reversal of 2222218 is 8122222.

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

It is a junction number, because it is equal to n+sod(n) for n = 2222195 and 2222204.

It is not an unprimeable number, because it can be changed into a prime (2222219) 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, 388 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (417780).

2^2222218 is an apocalyptic number.

2222218 is a deficient number, since it is larger than the sum of its proper divisors (1120022).

2222218 is a wasteful number, since it uses less digits than its factorization.

2222218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972.

The product of its digits is 256, while the sum is 19.

The square root of 2222218 is about 1490.7105688228. The cubic root of 2222218 is about 130.4955053917.

The spelling of 2222218 in words is "two million, two hundred twenty-two thousand, two hundred eighteen".