11321001217 has 2 divisors, whose sum is σ = 11321001218. Its totient is φ = 11321001216.

The previous prime is 11321001193. The next prime is 11321001253. The reversal of 11321001217 is 71210012311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11320747201 + 254016 = 106399^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321001217 - 2¹¹ = 11320999169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11321001194 and 11321001203.

It is not a weakly prime, because it can be changed into another prime (11321001277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660500608 + 5660500609.

It is an arithmetic number, because the mean of its divisors is an integer number (5660500609).

Almost surely, 2^11321001217 is an apocalyptic number.

It is an amenable number.

11321001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321001217 is an equidigital number, since it uses as much as digits as its factorization.

11321001217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 11321001217 its reverse (71210012311), we get a palindrome (82531013528).

The spelling of 11321001217 in words is "eleven billion, three hundred twenty-one million, one thousand, two hundred seventeen".