11264328221 has 2 divisors, whose sum is σ = 11264328222. Its totient is φ = 11264328220.

The previous prime is 11264328209. The next prime is 11264328253. The reversal of 11264328221 is 12282346211.

It is an a-pointer prime, because the next prime (11264328253) can be obtained adding 11264328221 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8030131321 + 3234196900 = 89611^2 + 56870^2 .

It is a cyclic number.

It is not a de Polignac number, because 11264328221 - 2¹⁰ = 11264327197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11264028221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5632164110 + 5632164111.

It is an arithmetic number, because the mean of its divisors is an integer number (5632164111).

Almost surely, 2^11264328221 is an apocalyptic number.

It is an amenable number.

11264328221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11264328221 is an equidigital number, since it uses as much as digits as its factorization.

11264328221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The spelling of 11264328221 in words is "eleven billion, two hundred sixty-four million, three hundred twenty-eight thousand, two hundred twenty-one".