11021111102171 has 2 divisors, whose sum is σ = 11021111102172. Its totient is φ = 11021111102170.

The previous prime is 11021111102107. The next prime is 11021111102233. The reversal of 11021111102171 is 17120111112011.

It is a strong prime.

It is an emirp because it is prime and its reverse (17120111112011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11021111102171 - 2⁶ = 11021111102107 is a prime.

It is not a weakly prime, because it can be changed into another prime (11021111102671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510555551085 + 5510555551086.

It is an arithmetic number, because the mean of its divisors is an integer number (5510555551086).

Almost surely, 2^{11021111102171} is an apocalyptic number.

11021111102171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021111102171 is an equidigital number, since it uses as much as digits as its factorization.

11021111102171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 20.

Adding to 11021111102171 its reverse (17120111112011), we get a palindrome (28141222214182).

The spelling of 11021111102171 in words is "eleven trillion, twenty-one billion, one hundred eleven million, one hundred two thousand, one hundred seventy-one".