11200021171 has 2 divisors, whose sum is σ = 11200021172. Its totient is φ = 11200021170.

The previous prime is 11200021163. The next prime is 11200021207. The reversal of 11200021171 is 17112000211.

11200021171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11200021171 - 2³ = 11200021163 is a prime.

It is a super-2 number, since 2×11200021171² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11200021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600010585 + 5600010586.

It is an arithmetic number, because the mean of its divisors is an integer number (5600010586).

Almost surely, 2^11200021171 is an apocalyptic number.

11200021171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200021171 is an equidigital number, since it uses as much as digits as its factorization.

11200021171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 11200021171 its reverse (17112000211), we get a palindrome (28312021382).

The spelling of 11200021171 in words is "eleven billion, two hundred million, twenty-one thousand, one hundred seventy-one".