221222202112 has 72 divisors (see below), whose sum is σ = 448450623936. Its totient is φ = 108902900736.

The previous prime is 221222202049. The next prime is 221222202217. The reversal of 221222202112 is 211202222122.

It is a self number, because there is not a number n which added to its sum of digits gives 221222202112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4440123 + ... + 4489669.

It is an arithmetic number, because the mean of its divisors is an integer number (6228480888).

Almost surely, 2^221222202112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221222202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224225311968).

221222202112 is an abundant number, since it is smaller than the sum of its proper divisors (227228421824).

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

221222202112 is a wasteful number, since it uses less digits than its factorization.

221222202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49833 (or 49819 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221222202112 its reverse (211202222122), we get a palindrome (432424424234).

The spelling of 221222202112 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, one hundred twelve".