11031223321 has 2 divisors, whose sum is σ = 11031223322. Its totient is φ = 11031223320.

The previous prime is 11031223297. The next prime is 11031223339. The reversal of 11031223321 is 12332213011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10193931225 + 837292096 = 100965^2 + 28936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11031223321 is a prime.

It is not a weakly prime, because it can be changed into another prime (11031223391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515611660 + 5515611661.

It is an arithmetic number, because the mean of its divisors is an integer number (5515611661).

Almost surely, 2^11031223321 is an apocalyptic number.

It is an amenable number.

11031223321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031223321 is an equidigital number, since it uses as much as digits as its factorization.

11031223321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11031223321 its reverse (12332213011), we get a palindrome (23363436332).

The spelling of 11031223321 in words is "eleven billion, thirty-one million, two hundred twenty-three thousand, three hundred twenty-one".