221120112222 has 16 divisors (see below), whose sum is σ = 491378027280. Its totient is φ = 73706704056.

The previous prime is 221120112221. The next prime is 221120112263. The reversal of 221120112222 is 222211021122.

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 = 221120112195 and 221120112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120112221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047408393 + ... + 2047408500.

It is an arithmetic number, because the mean of its divisors is an integer number (30711126705).

Almost surely, 2^221120112222 is an apocalyptic number.

221120112222 is an abundant number, since it is smaller than the sum of its proper divisors (270257915058).

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

221120112222 is a wasteful number, since it uses less digits than its factorization.

221120112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094816904 (or 4094816898 counting only the distinct ones).

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

Adding to 221120112222 its reverse (222211021122), we get a palindrome (443331133344).

The spelling of 221120112222 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, two hundred twenty-two".