221050 has 12 divisors (see below), whose sum is σ = 411246. Its totient is φ = 88400.

The previous prime is 221047. The next prime is 221059. The reversal of 221050 is 50122.

It can be written as a sum of positive squares in 3 ways, for example, as 194481 + 26569 = 441^2 + 163^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (221059) 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 5 ways as a sum of consecutive naturals, for example, 2161 + ... + 2260.

2²²¹⁰⁵⁰ is an apocalyptic number.

221050 is a deficient number, since it is larger than the sum of its proper divisors (190196).

221050 is a wasteful number, since it uses less digits than its factorization.

221050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433 (or 4428 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 221050 is about 470.1595473879. The cubic root of 221050 is about 60.4639951515.

Adding to 221050 its reverse (50122), we get a palindrome (271172).

The spelling of 221050 in words is "two hundred twenty-one thousand, fifty".