11221011001217 has 2 divisors, whose sum is σ = 11221011001218. Its totient is φ = 11221011001216.

The previous prime is 11221011001183. The next prime is 11221011001219. The reversal of 11221011001217 is 71210011012211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11041272311281 + 179738689936 = 3322841^2 + 423956^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221011001217 - 2¹⁰ = 11221011000193 is a prime.

It is a super-2 number, since 2×11221011001217² (a number of 27 digits) contains 22 as substring.

Together with 11221011001219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11221011001219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610505500608 + 5610505500609.

It is an arithmetic number, because the mean of its divisors is an integer number (5610505500609).

Almost surely, 2^{11221011001217} is an apocalyptic number.

It is an amenable number.

11221011001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221011001217 is an equidigital number, since it uses as much as digits as its factorization.

11221011001217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 11221011001217 its reverse (71210011012211), we get a palindrome (82431022013428).

The spelling of 11221011001217 in words is "eleven trillion, two hundred twenty-one billion, eleven million, one thousand, two hundred seventeen".