11001000001181 has 2 divisors, whose sum is σ = 11001000001182. Its totient is φ = 11001000001180.

The previous prime is 11001000001157. The next prime is 11001000001213. The reversal of 11001000001181 is 18110000010011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6088309502500 + 4912690498681 = 2467450^2 + 2216459^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001000001181 - 2³⁴ = 10983820131997 is a prime.

It is a super-2 number, since 2×11001000001181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001000001081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500500000590 + 5500500000591.

It is an arithmetic number, because the mean of its divisors is an integer number (5500500000591).

Almost surely, 2^{11001000001181} is an apocalyptic number.

It is an amenable number.

11001000001181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001000001181 is an equidigital number, since it uses as much as digits as its factorization.

11001000001181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11001000001181 its reverse (18110000010011), we get a palindrome (29111000011192).

The spelling of 11001000001181 in words is "eleven trillion, one billion, one thousand, one hundred eighty-one".