221100316 has 6 divisors (see below), whose sum is σ = 386925560. Its totient is φ = 110550156.

The previous prime is 221100301. The next prime is 221100323. The reversal of 221100316 is 613001122.

It is a self number, because there is not a number n which added to its sum of digits gives 221100316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637536 + ... + 27637543.

Almost surely, 2^221100316 is an apocalyptic number.

It is an amenable number.

221100316 is a deficient number, since it is larger than the sum of its proper divisors (165825244).

221100316 is a wasteful number, since it uses less digits than its factorization.

221100316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55275083 (or 55275081 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 221100316 is about 14869.4423567261. The cubic root of 221100316 is about 604.6858246288.

Adding to 221100316 its reverse (613001122), we get a palindrome (834101438).

The spelling of 221100316 in words is "two hundred twenty-one million, one hundred thousand, three hundred sixteen".