11011101221201 has 2 divisors, whose sum is σ = 11011101221202. Its totient is φ = 11011101221200.

The previous prime is 11011101221171. The next prime is 11011101221273. The reversal of 11011101221201 is 10212210111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8348170062400 + 2662931158801 = 2889320^2 + 1631849^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011101221201 - 2³⁰ = 11010027479377 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011101221801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505550610600 + 5505550610601.

It is an arithmetic number, because the mean of its divisors is an integer number (5505550610601).

Almost surely, 2^{11011101221201} is an apocalyptic number.

It is an amenable number.

11011101221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011101221201 is an equidigital number, since it uses as much as digits as its factorization.

11011101221201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11011101221201 its reverse (10212210111011), we get a palindrome (21223311332212).

The spelling of 11011101221201 in words is "eleven trillion, eleven billion, one hundred one million, two hundred twenty-one thousand, two hundred one".