221200112 has 30 divisors (see below), whose sum is σ = 498548448. Its totient is φ = 94799712.

The previous prime is 221200093. The next prime is 221200121. The reversal of 221200112 is 211002122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221200093 and 221200102.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 140288 + ... + 141855.

Almost surely, 2^221200112 is an apocalyptic number.

It is an amenable number.

221200112 is an abundant number, since it is smaller than the sum of its proper divisors (277348336).

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

221200112 is a wasteful number, since it uses less digits than its factorization.

221200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282165 (or 282152 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 221200112 is about 14872.7977193264. The cubic root of 221200112 is about 604.7767880895.

Adding to 221200112 its reverse (211002122), we get a palindrome (432202234).

The spelling of 221200112 in words is "two hundred twenty-one million, two hundred thousand, one hundred twelve".