11211113321 has 2 divisors, whose sum is σ = 11211113322. Its totient is φ = 11211113320.

The previous prime is 11211113299. The next prime is 11211113351. The reversal of 11211113321 is 12331111211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11209515625 + 1597696 = 105875^2 + 1264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211113321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211113321.

It is not a weakly prime, because it can be changed into another prime (11211113351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605556660 + 5605556661.

It is an arithmetic number, because the mean of its divisors is an integer number (5605556661).

Almost surely, 2^11211113321 is an apocalyptic number.

It is an amenable number.

11211113321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211113321 is an equidigital number, since it uses as much as digits as its factorization.

11211113321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 17.

Adding to 11211113321 its reverse (12331111211), we get a palindrome (23542224532).

The spelling of 11211113321 in words is "eleven billion, two hundred eleven million, one hundred thirteen thousand, three hundred twenty-one".