27021223 has 2 divisors, whose sum is σ = 27021224. Its totient is φ = 27021222.

The previous prime is 27021221. The next prime is 27021229. The reversal of 27021223 is 32212072.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27021223 - 2¹ = 27021221 is a prime.

Together with 27021221, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27021223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510611 + 13510612.

It is an arithmetic number, because the mean of its divisors is an integer number (13510612).

Almost surely, 2^27021223 is an apocalyptic number.

27021223 is a deficient number, since it is larger than the sum of its proper divisors (1).

27021223 is an equidigital number, since it uses as much as digits as its factorization.

27021223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 27021223 is about 5198.1942056834. The cubic root of 27021223 is about 300.0785831176.

Adding to 27021223 its reverse (32212072), we get a palindrome (59233295).

The spelling of 27021223 in words is "twenty-seven million, twenty-one thousand, two hundred twenty-three".