8221223 has 2 divisors, whose sum is σ = 8221224. Its totient is φ = 8221222.

The previous prime is 8221219. The next prime is 8221229. The reversal of 8221223 is 3221228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8221223 - 2² = 8221219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8221195 and 8221204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110611 + 4110612.

It is an arithmetic number, because the mean of its divisors is an integer number (4110612).

Almost surely, 2^8221223 is an apocalyptic number.

8221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

8221223 is an equidigital number, since it uses as much as digits as its factorization.

8221223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 20.

The square root of 8221223 is about 2867.2675145511. The cubic root of 8221223 is about 201.8267884181.

The spelling of 8221223 in words is "eight million, two hundred twenty-one thousand, two hundred twenty-three".