2220016665 has 16 divisors (see below), whose sum is σ = 3563382528. Its totient is φ = 1180223616.

The previous prime is 2220016597. The next prime is 2220016681. The reversal of 2220016665 is 5666100222.

It is not a de Polignac number, because 2220016665 - 2¹¹ = 2220014617 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 231729 + ... + 241118.

It is an arithmetic number, because the mean of its divisors is an integer number (222711408).

Almost surely, 2^2220016665 is an apocalyptic number.

It is an amenable number.

2220016665 is a deficient number, since it is larger than the sum of its proper divisors (1343365863).

2220016665 is a wasteful number, since it uses less digits than its factorization.

2220016665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473168.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2220016665 is about 47117.0528046906. The cubic root of 2220016665 is about 1304.5240142523.

Adding to 2220016665 its reverse (5666100222), we get a palindrome (7886116887).

The spelling of 2220016665 in words is "two billion, two hundred twenty million, sixteen thousand, six hundred sixty-five".