216105224 has 32 divisors (see below), whose sum is σ = 429922080. Its totient is φ = 101485824.

The previous prime is 216105209. The next prime is 216105251. The reversal of 216105224 is 422501612.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 216105224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78479 + ... + 81185.

It is an arithmetic number, because the mean of its divisors is an integer number (13435065).

Almost surely, 2^216105224 is an apocalyptic number.

It is an amenable number.

216105224 is a deficient number, since it is larger than the sum of its proper divisors (213816856).

216105224 is a wasteful number, since it uses less digits than its factorization.

216105224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317 (or 3313 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 216105224 is about 14700.5178140091. The cubic root of 216105224 is about 600.0974138130.

Adding to 216105224 its reverse (422501612), we get a palindrome (638606836).

The spelling of 216105224 in words is "two hundred sixteen million, one hundred five thousand, two hundred twenty-four".