822271 has 4 divisors (see below), whose sum is σ = 831600. Its totient is φ = 812944.

The previous prime is 822259. The next prime is 822277. The reversal of 822271 is 172228.

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 822271 - 2⁹ = 821759 is a prime.

It is a super-2 number, since 2×822271² = 1352259194882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822277) 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, 4531 + ... + 4708.

It is an arithmetic number, because the mean of its divisors is an integer number (207900).

2⁸²²²⁷¹ is an apocalyptic number.

822271 is a deficient number, since it is larger than the sum of its proper divisors (9329).

822271 is an equidigital number, since it uses as much as digits as its factorization.

822271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328.

The product of its digits is 448, while the sum is 22.

The square root of 822271 is about 906.7915967851. The cubic root of 822271 is about 93.6853444570.

Adding to 822271 its reverse (172228), we get a palindrome (994499).

It can be divided in two parts, 82227 and 1, that added together give a palindrome (82228).

The spelling of 822271 in words is "eight hundred twenty-two thousand, two hundred seventy-one".