1111112112222 has 96 divisors (see below), whose sum is σ = 2780284029120. Its totient is φ = 314123097600.

The previous prime is 1111112112211. The next prime is 1111112112241. The reversal of 1111112112222 is 2222112111111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 1111112112195 and 1111112112204.

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 47 ways as a sum of consecutive naturals, for example, 21213538 + ... + 21265850.

It is an arithmetic number, because the mean of its divisors is an integer number (28961291970).

Almost surely, 2^{1111112112222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111112112222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390142014560).

1111112112222 is an abundant number, since it is smaller than the sum of its proper divisors (1669171916898).

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

1111112112222 is a wasteful number, since it uses less digits than its factorization.

1111112112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54098 (or 54095 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 1111112112222 its reverse (2222112111111), we get a palindrome (3333224223333).

The spelling of 1111112112222 in words is "one trillion, one hundred eleven billion, one hundred twelve million, one hundred twelve thousand, two hundred twenty-two".