11211011201171 has 2 divisors, whose sum is σ = 11211011201172. Its totient is φ = 11211011201170.

The previous prime is 11211011201161. The next prime is 11211011201219. The reversal of 11211011201171 is 17110211011211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211011201171 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211011201161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605505600585 + 5605505600586.

It is an arithmetic number, because the mean of its divisors is an integer number (5605505600586).

Almost surely, 2^{11211011201171} is an apocalyptic number.

11211011201171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211011201171 is an equidigital number, since it uses as much as digits as its factorization.

11211011201171 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 11211011201171 its reverse (17110211011211), we get a palindrome (28321222212382).

The spelling of 11211011201171 in words is "eleven trillion, two hundred eleven billion, eleven million, two hundred one thousand, one hundred seventy-one".