111222221122112 has 14 divisors (see below), whose sum is σ = 220706595039318. Its totient is φ = 55611110561024.

The previous prime is 111222221122057. The next prime is 111222221122139. The reversal of 111222221122112 is 211221122222111.

It can be written as a sum of positive squares in only one way, i.e., 79461963252736 + 31760257869376 = 8914144^2 + 5635624^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 868923602453 + ... + 868923602580.

Almost surely, 2^{111222221122112} is an apocalyptic number.

It is an amenable number.

111222221122112 is a deficient number, since it is larger than the sum of its proper divisors (109484373917206).

111222221122112 is an equidigital number, since it uses as much as digits as its factorization.

111222221122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737847205045 (or 1737847205035 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 111222221122112 its reverse (211221122222111), we get a palindrome (322443343344223).

The spelling of 111222221122112 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".