8122216 has 8 divisors (see below), whose sum is σ = 15229170. Its totient is φ = 4061104.

The previous prime is 8122207. The next prime is 8122237. The reversal of 8122216 is 6122218.

It can be written as a sum of positive squares in only one way, i.e., 8099716 + 22500 = 2846^2 + 150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507631 + ... + 507646.

Almost surely, 2^8122216 is an apocalyptic number.

It is an amenable number.

8122216 is a deficient number, since it is larger than the sum of its proper divisors (7106954).

8122216 is a wasteful number, since it uses less digits than its factorization.

8122216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015283 (or 1015279 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 8122216 is about 2849.9501750031. The cubic root of 8122216 is about 201.0133238695.

It can be divided in two parts, 8122 and 216, that added together give a palindrome (8338).

The spelling of 8122216 in words is "eight million, one hundred twenty-two thousand, two hundred sixteen".