11021220201217 has 2 divisors, whose sum is σ = 11021220201218. Its totient is φ = 11021220201216.

The previous prime is 11021220201179. The next prime is 11021220201227. The reversal of 11021220201217 is 71210202212011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9087385091841 + 1933835109376 = 3014529^2 + 1390624^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021220201217 - 2¹¹ = 11021220199169 is a prime.

It is not a weakly prime, because it can be changed into another prime (11021220201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510610100608 + 5510610100609.

It is an arithmetic number, because the mean of its divisors is an integer number (5510610100609).

Almost surely, 2^{11021220201217} is an apocalyptic number.

It is an amenable number.

11021220201217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021220201217 is an equidigital number, since it uses as much as digits as its factorization.

11021220201217 is an evil number, because the sum of its binary digits is even.

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

Adding to 11021220201217 its reverse (71210202212011), we get a palindrome (82231422413228).

The spelling of 11021220201217 in words is "eleven trillion, twenty-one billion, two hundred twenty million, two hundred one thousand, two hundred seventeen".