220222216 has 16 divisors (see below), whose sum is σ = 437206140. Its totient is φ = 103633920.

The previous prime is 220222181. The next prime is 220222231. The reversal of 220222216 is 612222022.

It can be written as a sum of positive squares in 2 ways, for example, as 207648100 + 12574116 = 14410^2 + 3546^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220222193 and 220222202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809505 + ... + 809776.

Almost surely, 2^220222216 is an apocalyptic number.

It is an amenable number.

220222216 is a deficient number, since it is larger than the sum of its proper divisors (216983924).

220222216 is a wasteful number, since it uses less digits than its factorization.

220222216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619304 (or 1619300 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 220222216 is about 14839.8859833895. The cubic root of 220222216 is about 603.8842592139.

Adding to 220222216 its reverse (612222022), we get a palindrome (832444238).

The spelling of 220222216 in words is "two hundred twenty million, two hundred twenty-two thousand, two hundred sixteen".