11021220202217 has 2 divisors, whose sum is σ = 11021220202218. Its totient is φ = 11021220202216.

The previous prime is 11021220202117. The next prime is 11021220202243. The reversal of 11021220202217 is 71220202212011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8229577388176 + 2791642814041 = 2868724^2 + 1670821^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021220202217 - 2²² = 11021216007913 is a prime.

It is a super-3 number, since 3×11021220202217³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 11021220202192 and 11021220202201.

It is not a weakly prime, because it can be changed into another prime (11021220202117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510610101108 + 5510610101109.

It is an arithmetic number, because the mean of its divisors is an integer number (5510610101109).

Almost surely, 2^{11021220202217} is an apocalyptic number.

It is an amenable number.

11021220202217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021220202217 is an equidigital number, since it uses as much as digits as its factorization.

11021220202217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 11021220202217 its reverse (71220202212011), we get a palindrome (82241422414228).

The spelling of 11021220202217 in words is "eleven trillion, twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred seventeen".