221027 has 4 divisors (see below), whose sum is σ = 232680. Its totient is φ = 209376.

The previous prime is 221021. The next prime is 221047. The reversal of 221027 is 720122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221027 - 2⁸ = 220771 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 221027.

It is not an unprimeable number, because it can be changed into a prime (221021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5798 + ... + 5835.

It is an arithmetic number, because the mean of its divisors is an integer number (58170).

2²²¹⁰²⁷ is an apocalyptic number.

221027 is a deficient number, since it is larger than the sum of its proper divisors (11653).

221027 is a wasteful number, since it uses less digits than its factorization.

221027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11652.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 221027 is about 470.1350869697. The cubic root of 221027 is about 60.4618980088.

Adding to 221027 its reverse (720122), we get a palindrome (941149).

The spelling of 221027 in words is "two hundred twenty-one thousand, twenty-seven", and thus it is an iban number.