221350 has 24 divisors (see below), whose sum is σ = 435240. Its totient is φ = 83520.

The previous prime is 221327. The next prime is 221393. The reversal of 221350 is 53122.

221350 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 221350.

It is a congruent number.

It is an unprimeable number.

221350 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834 + ... + 1066.

It is an arithmetic number, because the mean of its divisors is an integer number (18135).

2²²¹³⁵⁰ is an apocalyptic number.

221350 is a deficient number, since it is larger than the sum of its proper divisors (213890).

221350 is a wasteful number, since it uses less digits than its factorization.

221350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 221350 is about 470.4784798479. The cubic root of 221350 is about 60.4913358720.

Adding to 221350 its reverse (53122), we get a palindrome (274472).

The spelling of 221350 in words is "two hundred twenty-one thousand, three hundred fifty".