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22271 is a prime number
BaseRepresentation
bin101011011111111
31010112212
411123333
51203041
6251035
7121634
oct53377
933485
1022271
1115807
1210a7b
13a1a2
14818b
1568eb
hex56ff

22271 has 2 divisors, whose sum is σ = 22272. Its totient is φ = 22270.

The previous prime is 22259. The next prime is 22273. The reversal of 22271 is 17222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22271 - 210 = 21247 is a prime.

It is a Sophie Germain prime.

Together with 22273, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 4 and base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22271.

It is not a weakly prime, because it can be changed into another prime (22273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11135 + 11136.

It is an arithmetic number, because the mean of its divisors is an integer number (11136).

222271 is an apocalyptic number.

22271 is a deficient number, since it is larger than the sum of its proper divisors (1).

22271 is an equidigital number, since it uses as much as digits as its factorization.

22271 is an evil number, because the sum of its binary digits is even.

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

The square root of 22271 is about 149.2347144601. The cubic root of 22271 is about 28.1349775299.

Adding to 22271 its reverse (17222), we get a palindrome (39493).

The spelling of 22271 in words is "twenty-two thousand, two hundred seventy-one", and thus it is an iban number.