1112222111112 has 192 divisors, whose sum is σ = 3644733456000. Its totient is φ = 299311967232.

The previous prime is 1112222111087. The next prime is 1112222111129. The reversal of 1112222111112 is 2111112222111.

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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1320964 + ... + 1992332.

It is an arithmetic number, because the mean of its divisors is an integer number (18982986750).

Almost surely, 2^{1112222111112} is an apocalyptic number.

1112222111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1112222111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1822366728000).

1112222111112 is an abundant number, since it is smaller than the sum of its proper divisors (2532511344888).

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

1112222111112 is a wasteful number, since it uses less digits than its factorization.

1112222111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671580 (or 671573 counting only the distinct ones).

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

Adding to 1112222111112 its reverse (2111112222111), we get a palindrome (3223334333223).

The spelling of 1112222111112 in words is "one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twelve".