2102211222017 has 2 divisors, whose sum is σ = 2102211222018. Its totient is φ = 2102211222016.

The previous prime is 2102211221959. The next prime is 2102211222047. The reversal of 2102211222017 is 7102221122012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1357297230961 + 744913991056 = 1165031^2 + 863084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102211222017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102211221983 and 2102211222001.

It is not a weakly prime, because it can be changed into another prime (2102211222047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051105611008 + 1051105611009.

It is an arithmetic number, because the mean of its divisors is an integer number (1051105611009).

Almost surely, 2^{2102211222017} is an apocalyptic number.

It is an amenable number.

2102211222017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102211222017 is an equidigital number, since it uses as much as digits as its factorization.

2102211222017 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 2102211222017 its reverse (7102221122012), we get a palindrome (9204432344029).

The spelling of 2102211222017 in words is "two trillion, one hundred two billion, two hundred eleven million, two hundred twenty-two thousand, seventeen".