11223321985 has 16 divisors (see below), whose sum is σ = 13711332240. Its totient is φ = 8816912640.

The previous prime is 11223321979. The next prime is 11223322009. The reversal of 11223321985 is 58912332211.

It is a happy number.

11223321985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1338389056 + 9884932929 = 36584^2 + 99423^2 .

It is not a de Polignac number, because 11223321985 - 2¹¹ = 11223319937 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 156951 + ... + 216979.

It is an arithmetic number, because the mean of its divisors is an integer number (856958265).

Almost surely, 2^11223321985 is an apocalyptic number.

It is an amenable number.

11223321985 is a deficient number, since it is larger than the sum of its proper divisors (2488010255).

11223321985 is an equidigital number, since it uses as much as digits as its factorization.

11223321985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60708.

The product of its digits is 25920, while the sum is 37.

The spelling of 11223321985 in words is "eleven billion, two hundred twenty-three million, three hundred twenty-one thousand, nine hundred eighty-five".