221210116 has 12 divisors (see below), whose sum is σ = 393679440. Its totient is φ = 108730280.

The previous prime is 221210111. The next prime is 221210131. The reversal of 221210116 is 611012122.

It is a self number, because there is not a number n which added to its sum of digits gives 221210116.

It is not an unprimeable number, because it can be changed into a prime (221210111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468430 + ... + 468901.

It is an arithmetic number, because the mean of its divisors is an integer number (32806620).

Almost surely, 2^221210116 is an apocalyptic number.

It is an amenable number.

221210116 is a deficient number, since it is larger than the sum of its proper divisors (172469324).

221210116 is a wasteful number, since it uses less digits than its factorization.

221210116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937394 (or 937392 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 221210116 is about 14873.1340342243. The cubic root of 221210116 is about 604.7859051671.

Adding to 221210116 its reverse (611012122), we get a palindrome (832222238).

The spelling of 221210116 in words is "two hundred twenty-one million, two hundred ten thousand, one hundred sixteen".