1022216 has 16 divisors (see below), whose sum is σ = 2064300. Its totient is φ = 471744.

The previous prime is 1022209. The next prime is 1022237. The reversal of 1022216 is 6122201.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 2116 = 1010^2 + 46^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1022216.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4811 + ... + 5018.

2^1022216 is an apocalyptic number.

It is an amenable number.

1022216 is an abundant number, since it is smaller than the sum of its proper divisors (1042084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022216 is a wasteful number, since it uses less digits than its factorization.

1022216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848 (or 9844 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1022216 is about 1011.0469820933. The cubic root of 1022216 is about 100.7351161342.

Adding to 1022216 its reverse (6122201), we get a palindrome (7144417).

The spelling of 1022216 in words is "one million, twenty-two thousand, two hundred sixteen".