2217222 has 24 divisors (see below), whose sum is σ = 5490576. Its totient is φ = 633456.

The previous prime is 2217217. The next prime is 2217233. The reversal of 2217222 is 2227122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2217195 and 2217204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8673 + ... + 8924.

It is an arithmetic number, because the mean of its divisors is an integer number (228774).

2^2217222 is an apocalyptic number.

2217222 is an abundant number, since it is smaller than the sum of its proper divisors (3273354).

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

2217222 is a wasteful number, since it uses less digits than its factorization.

2217222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17612 (or 17609 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 2217222 is about 1489.0339149932. The cubic root of 2217222 is about 130.3976384959.

It can be divided in two parts, 22172 and 22, that multiplied together give a palindrome (487784).

The spelling of 2217222 in words is "two million, two hundred seventeen thousand, two hundred twenty-two".