220112221122 has 64 divisors (see below), whose sum is σ = 494258544000. Its totient is φ = 72603518400.

The previous prime is 220112221097. The next prime is 220112221129. The reversal of 220112221122 is 221122211022.

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 = 220112221095 and 220112221104.

It is not an unprimeable number, because it can be changed into a prime (220112221129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10619493 + ... + 10640199.

It is an arithmetic number, because the mean of its divisors is an integer number (7722789750).

Almost surely, 2^220112221122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220112221122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247129272000).

220112221122 is an abundant number, since it is smaller than the sum of its proper divisors (274146322878).

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

220112221122 is a wasteful number, since it uses less digits than its factorization.

220112221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22768 (or 22762 counting only the distinct ones).

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

Adding to 220112221122 its reverse (221122211022), we get a palindrome (441234432144).

The spelling of 220112221122 in words is "two hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-two".