221120206 has 8 divisors (see below), whose sum is σ = 346101264. Its totient is φ = 105753120.

The previous prime is 221120197. The next prime is 221120219. The reversal of 221120206 is 602021122.

221120206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221120206.

It is a congruent number.

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, 2403435 + ... + 2403526.

It is an arithmetic number, because the mean of its divisors is an integer number (43262658).

Almost surely, 2^221120206 is an apocalyptic number.

221120206 is a deficient number, since it is larger than the sum of its proper divisors (124981058).

221120206 is a wasteful number, since it uses less digits than its factorization.

221120206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806986.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221120206 is about 14870.1111630008. Note that the first 4 decimals coincide. The cubic root of 221120206 is about 604.7039564293.

Adding to 221120206 its reverse (602021122), we get a palindrome (823141328).

The spelling of 221120206 in words is "two hundred twenty-one million, one hundred twenty thousand, two hundred six".