221000000222 has 16 divisors (see below), whose sum is σ = 338705830800. Its totient is φ = 108120194688.

The previous prime is 221000000197. The next prime is 221000000231. The reversal of 221000000222 is 222000000122.

221000000222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5514443 + ... + 5554374.

It is an arithmetic number, because the mean of its divisors is an integer number (21169114425).

Almost surely, 2^221000000222 is an apocalyptic number.

221000000222 is a deficient number, since it is larger than the sum of its proper divisors (117705830578).

221000000222 is a wasteful number, since it uses less digits than its factorization.

221000000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11069035.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 221000000222 its reverse (222000000122), we get a palindrome (443000000344).

The spelling of 221000000222 in words is "two hundred twenty-one billion, two hundred twenty-two", and thus it is an aban number.