2216999808 has 224 divisors, whose sum is σ = 6916591440. Its totient is φ = 706185216.

The previous prime is 2216999789. The next prime is 2216999809. The reversal of 2216999808 is 8089996122.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216999809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2145660 + ... + 2146692.

Almost surely, 2^2216999808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2216999808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3458295720).

2216999808 is an abundant number, since it is smaller than the sum of its proper divisors (4699591632).

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

2216999808 is an equidigital number, since it uses as much as digits as its factorization.

2216999808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 2216999808 is about 47085.0274291096. The cubic root of 2216999808 is about 1303.9328255258.

The spelling of 2216999808 in words is "two billion, two hundred sixteen million, nine hundred ninety-nine thousand, eight hundred eight".