112012221222 has 128 divisors (see below), whose sum is σ = 278304768000. Its totient is φ = 33108510240.

The previous prime is 112012221071. The next prime is 112012221239. The reversal of 112012221222 is 222122210211.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 112012221195 and 112012221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3880479 + ... + 3909237.

It is an arithmetic number, because the mean of its divisors is an integer number (2174256000).

Almost surely, 2^112012221222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112012221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139152384000).

112012221222 is an abundant number, since it is smaller than the sum of its proper divisors (166292546778).

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

112012221222 is a wasteful number, since it uses less digits than its factorization.

112012221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28943 (or 28937 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 112012221222 its reverse (222122210211), we get a palindrome (334134431433).

The spelling of 112012221222 in words is "one hundred twelve billion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".