11202020100181 has 2 divisors, whose sum is σ = 11202020100182. Its totient is φ = 11202020100180.

The previous prime is 11202020100109. The next prime is 11202020100211. The reversal of 11202020100181 is 18100102020211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10993143679281 + 208876420900 = 3315591^2 + 457030^2 .

It is a cyclic number.

It is not a de Polignac number, because 11202020100181 - 2¹⁹ = 11202019575893 is a prime.

It is a super-2 number, since 2×11202020100181² (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 (11202020103181) 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, 5601010050090 + 5601010050091.

It is an arithmetic number, because the mean of its divisors is an integer number (5601010050091).

Almost surely, 2^{11202020100181} is an apocalyptic number.

It is an amenable number.

11202020100181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202020100181 is an equidigital number, since it uses as much as digits as its factorization.

11202020100181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11202020100181 its reverse (18100102020211), we get a palindrome (29302122120392).

The spelling of 11202020100181 in words is "eleven trillion, two hundred two billion, twenty million, one hundred thousand, one hundred eighty-one".