221311112222 has 16 divisors (see below), whose sum is σ = 334499770800. Its totient is φ = 109812545088.

The previous prime is 221311112213. The next prime is 221311112251. The reversal of 221311112222 is 222211113122.

221311112222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221311112194 and 221311112203.

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, 11588 + ... + 665399.

It is an arithmetic number, because the mean of its divisors is an integer number (20906235675).

Almost surely, 2^221311112222 is an apocalyptic number.

221311112222 is a deficient number, since it is larger than the sum of its proper divisors (113188658578).

221311112222 is a wasteful number, since it uses less digits than its factorization.

221311112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678235.

The product of its digits is 192, while the sum is 20.

Adding to 221311112222 its reverse (222211113122), we get a palindrome (443522225344).

The spelling of 221311112222 in words is "two hundred twenty-one billion, three hundred eleven million, one hundred twelve thousand, two hundred twenty-two".