221122112 has 14 divisors (see below), whose sum is σ = 438789318. Its totient is φ = 110561024.

The previous prime is 221122103. The next prime is 221122123. The reversal of 221122112 is 211221122.

It can be written as a sum of positive squares in only one way, i.e., 188677696 + 32444416 = 13736^2 + 5696^2 .

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1727453 + ... + 1727580.

Almost surely, 2^221122112 is an apocalyptic number.

It is an amenable number.

221122112 is a deficient number, since it is larger than the sum of its proper divisors (217667206).

221122112 is an equidigital number, since it uses as much as digits as its factorization.

221122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455045 (or 3455035 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 221122112 is about 14870.1752511529. The cubic root of 221122112 is about 604.7056938891.

Adding to 221122112 its reverse (211221122), we get a palindrome (432343234).

It can be divided in two parts, 2 and 21122112, that multiplied together give a palindrome (42244224).

The spelling of 221122112 in words is "two hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".