112111221222 has 384 divisors, whose sum is σ = 336966110208. Its totient is φ = 25996723200.

The previous prime is 112111221199. The next prime is 112111221247. The reversal of 112111221222 is 222122111211.

112111221222 is a `hidden beast` number, since 11 + 211 + 1 + 221 + 222 = 666.

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 = 112111221195 and 112111221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 140666128 + ... + 140666924.

It is an arithmetic number, because the mean of its divisors is an integer number (877515912).

Almost surely, 2^112111221222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112111221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168483055104).

112111221222 is an abundant number, since it is smaller than the sum of its proper divisors (224854888986).

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

112111221222 is a wasteful number, since it uses less digits than its factorization.

112111221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1081 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 112111221222 its reverse (222122111211), we get a palindrome (334233332433).

It can be divided in two parts, 112111 and 221222, that added together give a palindrome (333333).

The spelling of 112111221222 in words is "one hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-two".