11001020122217 has 2 divisors, whose sum is σ = 11001020122218. Its totient is φ = 11001020122216.

The previous prime is 11001020122091. The next prime is 11001020122231. The reversal of 11001020122217 is 71222102010011.

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., 8016888250921 + 2984131871296 = 2831411^2 + 1727464^2 .

It is an emirp because it is prime and its reverse (71222102010011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11001020122217 - 2⁸ = 11001020121961 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001020122517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500510061108 + 5500510061109.

It is an arithmetic number, because the mean of its divisors is an integer number (5500510061109).

Almost surely, 2^{11001020122217} is an apocalyptic number.

It is an amenable number.

11001020122217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001020122217 is an equidigital number, since it uses as much as digits as its factorization.

11001020122217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 11001020122217 its reverse (71222102010011), we get a palindrome (82223122132228).

The spelling of 11001020122217 in words is "eleven trillion, one billion, twenty million, one hundred twenty-two thousand, two hundred seventeen".