11223020321 has 2 divisors, whose sum is σ = 11223020322. Its totient is φ = 11223020320.

The previous prime is 11223020317. The next prime is 11223020327. The reversal of 11223020321 is 12302032211.

11223020321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8991780625 + 2231239696 = 94825^2 + 47236^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223020321 - 2² = 11223020317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11223020321.

It is not a weakly prime, because it can be changed into another prime (11223020327) 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 as a sum of consecutive naturals, namely, 5611510160 + 5611510161.

It is an arithmetic number, because the mean of its divisors is an integer number (5611510161).

Almost surely, 2^11223020321 is an apocalyptic number.

It is an amenable number.

11223020321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223020321 is an equidigital number, since it uses as much as digits as its factorization.

11223020321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11223020321 its reverse (12302032211), we get a palindrome (23525052532).

The spelling of 11223020321 in words is "eleven billion, two hundred twenty-three million, twenty thousand, three hundred twenty-one".