2223311665 has 8 divisors (see below), whose sum is σ = 2668492008. Its totient is φ = 1778304000.

The previous prime is 2223311659. The next prime is 2223311669. The reversal of 2223311665 is 5661133222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 814360369 + 1408951296 = 28537^2 + 37536^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2223311665 is a prime.

It is a super-2 number, since 2×2223311665² = 9886229519450144450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223311669) 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 7 ways as a sum of consecutive naturals, for example, 12912 + ... + 67921.

It is an arithmetic number, because the mean of its divisors is an integer number (333561501).

Almost surely, 2^2223311665 is an apocalyptic number.

It is an amenable number.

2223311665 is a deficient number, since it is larger than the sum of its proper divisors (445180343).

2223311665 is an equidigital number, since it uses as much as digits as its factorization.

2223311665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86339.

The product of its digits is 12960, while the sum is 31.

The square root of 2223311665 is about 47152.0059488459. The cubic root of 2223311665 is about 1305.1690967642.

Adding to 2223311665 its reverse (5661133222), we get a palindrome (7884444887).

The spelling of 2223311665 in words is "two billion, two hundred twenty-three million, three hundred eleven thousand, six hundred sixty-five".