111221111112222 has 32 divisors (see below), whose sum is σ = 228564592797600. Its totient is φ = 36054277193088.

The previous prime is 111221111112217. The next prime is 111221111112239. The reversal of 111221111112222 is 222211111122111.

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120612697 + ... + 121531332.

It is an arithmetic number, because the mean of its divisors is an integer number (7142643524925).

Almost surely, 2^{111221111112222} is an apocalyptic number.

111221111112222 is an abundant number, since it is smaller than the sum of its proper divisors (117343481685378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221111112222 is a wasteful number, since it uses less digits than its factorization.

111221111112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242146140.

The product of its digits is 64, while the sum is 21.

Adding to 111221111112222 its reverse (222211111122111), we get a palindrome (333432222234333).

The spelling of 111221111112222 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".