2222216 has 16 divisors (see below), whose sum is σ = 4188300. Its totient is φ = 1105344.

The previous prime is 2222203. The next prime is 2222219. The reversal of 2222216 is 6122222.

It can be written as a sum of positive squares in 2 ways, for example, as 2220100 + 2116 = 1490^2 + 46^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2222194 and 2222203.

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, 1226 + ... + 2438.

2^2222216 is an apocalyptic number.

It is an amenable number.

2222216 is a deficient number, since it is larger than the sum of its proper divisors (1966084).

2222216 is a wasteful number, since it uses less digits than its factorization.

2222216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1444 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 2222216 is about 1490.7098980016. The cubic root of 2222216 is about 130.4954662430.

Adding to 2222216 its reverse (6122222), we get a palindrome (8344438).

The spelling of 2222216 in words is "two million, two hundred twenty-two thousand, two hundred sixteen".