8216222 has 40 divisors (see below), whose sum is σ = 15125400. Its totient is φ = 3342192.

The previous prime is 8216179. The next prime is 8216231. The reversal of 8216222 is 2226128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139229 + ... + 139287.

It is an arithmetic number, because the mean of its divisors is an integer number (378135).

Almost surely, 2^8216222 is an apocalyptic number.

8216222 is a deficient number, since it is larger than the sum of its proper divisors (6909178).

8216222 is an equidigital number, since it uses as much as digits as its factorization.

8216222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 97 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 8216222 is about 2866.3952972331. The cubic root of 8216222 is about 201.7858561262.

The spelling of 8216222 in words is "eight million, two hundred sixteen thousand, two hundred twenty-two".