221063 has 8 divisors (see below), whose sum is σ = 232848. Its totient is φ = 209664.

The previous prime is 221059. The next prime is 221069. The reversal of 221063 is 360122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221063 - 2² = 221059 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231 + ... + 2327.

It is an arithmetic number, because the mean of its divisors is an integer number (29106).

2²²¹⁰⁶³ is an apocalyptic number.

221063 is a deficient number, since it is larger than the sum of its proper divisors (11785).

221063 is an equidigital number, since it uses as much as digits as its factorization.

221063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221063 is about 470.1733722788. The cubic root of 221063 is about 60.4651804286.

Adding to 221063 its reverse (360122), we get a palindrome (581185).

The spelling of 221063 in words is "two hundred twenty-one thousand, sixty-three".