221200001112 has 16 divisors (see below), whose sum is σ = 553000002840. Its totient is φ = 73733333696.

The previous prime is 221200001111. The next prime is 221200001123. The reversal of 221200001112 is 211100002122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200001111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608333333 + ... + 4608333380.

Almost surely, 2^221200001112 is an apocalyptic number.

It is an amenable number.

221200001112 is an abundant number, since it is smaller than the sum of its proper divisors (331800001728).

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

221200001112 is a wasteful number, since it uses less digits than its factorization.

221200001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216666722 (or 9216666718 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221200001112 its reverse (211100002122), we get a palindrome (432300003234).

The spelling of 221200001112 in words is "two hundred twenty-one billion, two hundred million, one thousand, one hundred twelve".