11221102171 has 2 divisors, whose sum is σ = 11221102172. Its totient is φ = 11221102170.

The previous prime is 11221102141. The next prime is 11221102223. The reversal of 11221102171 is 17120112211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221102171 is a prime.

It is not a weakly prime, because it can be changed into another prime (11221102141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610551085 + 5610551086.

It is an arithmetic number, because the mean of its divisors is an integer number (5610551086).

Almost surely, 2^11221102171 is an apocalyptic number.

11221102171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221102171 is an equidigital number, since it uses as much as digits as its factorization.

11221102171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 11221102171 its reverse (17120112211), we get a palindrome (28341214382).

The spelling of 11221102171 in words is "eleven billion, two hundred twenty-one million, one hundred two thousand, one hundred seventy-one".