221110211112 has 128 divisors (see below), whose sum is σ = 647150688000. Its totient is φ = 62927929344.

The previous prime is 221110211107. The next prime is 221110211171. The reversal of 221110211112 is 211112011122.

It is a happy number.

221110211112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221110211091 and 221110211100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2063368 + ... + 2167880.

It is an arithmetic number, because the mean of its divisors is an integer number (5055864750).

Almost surely, 2^221110211112 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 221110211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323575344000).

221110211112 is an abundant number, since it is smaller than the sum of its proper divisors (426040476888).

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

221110211112 is a wasteful number, since it uses less digits than its factorization.

221110211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104800 (or 104782 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221110211112 its reverse (211112011122), we get a palindrome (432222222234).

The spelling of 221110211112 in words is "two hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, one hundred twelve".