22279 has 2 divisors, whose sum is σ = 22280.
Its totient is φ = 22278.
The previous prime is 22277. The next prime is 22283. The reversal of 22279 is 97222.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 22279 - 21 = 22277 is a prime.
Together with 22277, it forms a pair of twin primes.
It is a plaindrome in base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (22271) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11139 + 11140.
It is an arithmetic number, because the mean of its divisors is an integer number (11140).
222279 is an apocalyptic number.
22279 is a deficient number, since it is larger than the sum of its proper divisors (1).
22279 is an equidigital number, since it uses as much as digits as its factorization.
22279 is an evil number, because the sum of its binary digits is even.
The product of its digits is 504, while the sum is 22.
The square root of 22279 is about 149.2615154687.
The cubic root of 22279 is about 28.1383459294.
The spelling of 22279 in words is "twenty-two thousand, two hundred seventy-nine".