11001202181 has 2 divisors, whose sum is σ = 11001202182. Its totient is φ = 11001202180.

The previous prime is 11001202021. The next prime is 11001202183. The reversal of 11001202181 is 18120210011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9126745156 + 1874457025 = 95534^2 + 43295^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001202181 - 2³⁰ = 9927460357 is a prime.

It is a super-2 number, since 2×11001202181² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 11001202183, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001202183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500601090 + 5500601091.

It is an arithmetic number, because the mean of its divisors is an integer number (5500601091).

Almost surely, 2^11001202181 is an apocalyptic number.

It is an amenable number.

11001202181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001202181 is an equidigital number, since it uses as much as digits as its factorization.

11001202181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11001202181 its reverse (18120210011), we get a palindrome (29121412192).

The spelling of 11001202181 in words is "eleven billion, one million, two hundred two thousand, one hundred eighty-one".