80221 has 2 divisors, whose sum is σ = 80222. Its totient is φ = 80220.

The previous prime is 80209. The next prime is 80231. The reversal of 80221 is 12208.

80221 is nontrivially palindromic in base 15.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68121 + 12100 = 261^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 80221 - 2¹¹ = 78173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40110 + 40111.

It is an arithmetic number, because the mean of its divisors is an integer number (40111).

2⁸⁰²²¹ is an apocalyptic number.

It is an amenable number.

80221 is a deficient number, since it is larger than the sum of its proper divisors (1).

80221 is an equidigital number, since it uses as much as digits as its factorization.

80221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 80221 is about 283.2331195323. The cubic root of 80221 is about 43.1283348258.

Subtracting from 80221 its sum of digits (13), we obtain a palindrome (80208).

Adding to 80221 its reverse (12208), we get a palindrome (92429).

The spelling of 80221 in words is "eighty thousand, two hundred twenty-one".