221327 has 2 divisors, whose sum is σ = 221328. Its totient is φ = 221326.

The previous prime is 221317. The next prime is 221393. The reversal of 221327 is 723122.

221327 is nontrivially palindromic in base 7.

221327 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221327 - 2⁴ = 221311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110663 + 110664.

It is an arithmetic number, because the mean of its divisors is an integer number (110664).

2²²¹³²⁷ is an apocalyptic number.

221327 is a deficient number, since it is larger than the sum of its proper divisors (1).

221327 is an equidigital number, since it uses as much as digits as its factorization.

221327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 17.

The square root of 221327 is about 470.4540360120. The cubic root of 221327 is about 60.4892406247.

Adding to 221327 its reverse (723122), we get a palindrome (944449).

The spelling of 221327 in words is "two hundred twenty-one thousand, three hundred twenty-seven", and thus it is an iban number.