221222111122 has 32 divisors (see below), whose sum is σ = 340497354240. Its totient is φ = 107761463040.

The previous prime is 221222111107. The next prime is 221222111179. The reversal of 221222111122 is 221111222122.

221222111122 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 221222111122.

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 15 ways as a sum of consecutive naturals, for example, 25183143 + ... + 25191925.

It is an arithmetic number, because the mean of its divisors is an integer number (10640542320).

Almost surely, 2^221222111122 is an apocalyptic number.

221222111122 is a deficient number, since it is larger than the sum of its proper divisors (119275243118).

221222111122 is a wasteful number, since it uses less digits than its factorization.

221222111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10938.

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

Adding to 221222111122 its reverse (221111222122), we get a palindrome (442333333244).

The spelling of 221222111122 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twenty-two".