221343112 has 16 divisors (see below), whose sum is σ = 415181340. Its totient is φ = 110628096.

The previous prime is 221343107. The next prime is 221343113. The reversal of 221343112 is 211343122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178649956 + 42693156 = 13366^2 + 6534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221343112.

It is not an unprimeable number, because it can be changed into a prime (221343113) 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, 29188 + ... + 35980.

Almost surely, 2^221343112 is an apocalyptic number.

It is an amenable number.

221343112 is a deficient number, since it is larger than the sum of its proper divisors (193838228).

221343112 is a wasteful number, since it uses less digits than its factorization.

221343112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10872 (or 10868 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 221343112 is about 14877.6043770494. The cubic root of 221343112 is about 604.9070840619.

Adding to 221343112 its reverse (211343122), we get a palindrome (432686234).

The spelling of 221343112 in words is "two hundred twenty-one million, three hundred forty-three thousand, one hundred twelve".