112121220222 has 64 divisors (see below), whose sum is σ = 272391724800. Its totient is φ = 33903289440.

The previous prime is 112121220161. The next prime is 112121220227. The reversal of 112121220222 is 222022121211.

It is a happy number.

112121220222 is a `hidden beast` number, since 11 + 212 + 1 + 220 + 222 = 666.

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 = 112121220195 and 112121220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121220227) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 75304 + ... + 479492.

It is an arithmetic number, because the mean of its divisors is an integer number (4256120700).

Almost surely, 2^112121220222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112121220222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136195862400).

112121220222 is an abundant number, since it is smaller than the sum of its proper divisors (160270504578).

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

112121220222 is a wasteful number, since it uses less digits than its factorization.

112121220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404678 (or 404672 counting only the distinct ones).

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

Adding to 112121220222 its reverse (222022121211), we get a palindrome (334143341433).

The spelling of 112121220222 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".