221112111112 has 32 divisors (see below), whose sum is σ = 416858618880. Its totient is φ = 109950099840.

The previous prime is 221112111109. The next prime is 221112111119. The reversal of 221112111112 is 211111211122.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (221112111119) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7109548 + ... + 7140580.

It is an arithmetic number, because the mean of its divisors is an integer number (13026831840).

Almost surely, 2^221112111112 is an apocalyptic number.

It is an amenable number.

221112111112 is a deficient number, since it is larger than the sum of its proper divisors (195746507768).

221112111112 is a wasteful number, since it uses less digits than its factorization.

221112111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35893 (or 35889 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

Adding to 221112111112 its reverse (211111211122), we get a palindrome (432223322234).

The spelling of 221112111112 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred twelve".