221222112112 has 10 divisors (see below), whose sum is σ = 428617842248. Its totient is φ = 110611056048.

The previous prime is 221222112109. The next prime is 221222112151. The reversal of 221222112112 is 211211222122.

221222112112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 221222112112.

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 as a sum of consecutive naturals, namely, 6913190988 + ... + 6913191019.

Almost surely, 2^221222112112 is an apocalyptic number.

It is an amenable number.

221222112112 is a deficient number, since it is larger than the sum of its proper divisors (207395730136).

221222112112 is a wasteful number, since it uses less digits than its factorization.

221222112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13826382015 (or 13826382009 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

Adding to 221222112112 its reverse (211211222122), we get a palindrome (432433334234).

The spelling of 221222112112 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twelve".