222216616 has 16 divisors (see below), whose sum is σ = 434772000. Its totient is φ = 106277424.

The previous prime is 222216607. The next prime is 222216623. The reversal of 222216616 is 616612222.

222216616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 603666 + ... + 604033.

It is an arithmetic number, because the mean of its divisors is an integer number (27173250).

Almost surely, 2^222216616 is an apocalyptic number.

It is an amenable number.

222216616 is a deficient number, since it is larger than the sum of its proper divisors (212555384).

222216616 is a wasteful number, since it uses less digits than its factorization.

222216616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207728 (or 1207724 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 222216616 is about 14906.9318104028. The cubic root of 222216616 is about 605.7017706436.

Adding to 222216616 its reverse (616612222), we get a palindrome (838828838).

The spelling of 222216616 in words is "two hundred twenty-two million, two hundred sixteen thousand, six hundred sixteen".