11020120221217 has 2 divisors, whose sum is σ = 11020120221218. Its totient is φ = 11020120221216.

The previous prime is 11020120221169. The next prime is 11020120221233. The reversal of 11020120221217 is 71212202102011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10325579662336 + 694540558881 = 3213344^2 + 833391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020120221217 is a prime.

It is a super-2 number, since 2×11020120221217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11020120221247) 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, 5510060110608 + 5510060110609.

It is an arithmetic number, because the mean of its divisors is an integer number (5510060110609).

Almost surely, 2^{11020120221217} is an apocalyptic number.

It is an amenable number.

11020120221217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020120221217 is an equidigital number, since it uses as much as digits as its factorization.

11020120221217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 11020120221217 its reverse (71212202102011), we get a palindrome (82232322323228).

The spelling of 11020120221217 in words is "eleven trillion, twenty billion, one hundred twenty million, two hundred twenty-one thousand, two hundred seventeen".