2216220669 has 20 divisors (see below), whose sum is σ = 3565317756. Its totient is φ = 1363827456.

The previous prime is 2216220619. The next prime is 2216220673. The reversal of 2216220669 is 9660226122.

2216220669 is a `hidden beast` number, since 2 + 21 + 622 + 0 + 6 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 225900900 + 1990319769 = 15030^2 + 44613^2 .

It is not a de Polignac number, because 2216220669 - 2¹⁷ = 2216089597 is a prime.

It is a super-2 number, since 2×2216220669² = 9823268107405615122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216220619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1051284 + ... + 1053389.

Almost surely, 2^2216220669 is an apocalyptic number.

It is an amenable number.

2216220669 is a deficient number, since it is larger than the sum of its proper divisors (1349097087).

2216220669 is a wasteful number, since it uses less digits than its factorization.

2216220669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104698 (or 2104689 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2216220669 is about 47076.7529572718. The cubic root of 2216220669 is about 1303.7800569131.

The spelling of 2216220669 in words is "two billion, two hundred sixteen million, two hundred twenty thousand, six hundred sixty-nine".