11013212321 has 2 divisors, whose sum is σ = 11013212322. Its totient is φ = 11013212320.

The previous prime is 11013212311. The next prime is 11013212339. The reversal of 11013212321 is 12321231011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9695159296 + 1318053025 = 98464^2 + 36305^2 .

It is a cyclic number.

It is not a de Polignac number, because 11013212321 - 2¹⁸ = 11012950177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11013212321.

It is not a weakly prime, because it can be changed into another prime (11013212311) 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 as a sum of consecutive naturals, namely, 5506606160 + 5506606161.

It is an arithmetic number, because the mean of its divisors is an integer number (5506606161).

Almost surely, 2^11013212321 is an apocalyptic number.

It is an amenable number.

11013212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11013212321 is an equidigital number, since it uses as much as digits as its factorization.

11013212321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11013212321 its reverse (12321231011), we get a palindrome (23334443332).

The spelling of 11013212321 in words is "eleven billion, thirteen million, two hundred twelve thousand, three hundred twenty-one".