2211020197117 has 2 divisors, whose sum is σ = 2211020197118. Its totient is φ = 2211020197116.

The previous prime is 2211020197103. The next prime is 2211020197123. The reversal of 2211020197117 is 7117910201122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2132829497241 + 78190699876 = 1460421^2 + 279626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211020197117 is a prime.

It is a super-2 number, since 2×2211020197117² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211020197517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105510098558 + 1105510098559.

It is an arithmetic number, because the mean of its divisors is an integer number (1105510098559).

Almost surely, 2^{2211020197117} is an apocalyptic number.

It is an amenable number.

2211020197117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211020197117 is an equidigital number, since it uses as much as digits as its factorization.

2211020197117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 34.

Adding to 2211020197117 its reverse (7117910201122), we get a palindrome (9328930398239).

The spelling of 2211020197117 in words is "two trillion, two hundred eleven billion, twenty million, one hundred ninety-seven thousand, one hundred seventeen".