18201010911011 has 2 divisors, whose sum is σ = 18201010911012. Its totient is φ = 18201010911010.

The previous prime is 18201010910987. The next prime is 18201010911107. The reversal of 18201010911011 is 11011901010281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18201010911011 - 2³⁰ = 18199937169187 is a prime.

It is a super-2 number, since 2×18201010911011² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18201010911911) 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, 9100505455505 + 9100505455506.

It is an arithmetic number, because the mean of its divisors is an integer number (9100505455506).

Almost surely, 2^{18201010911011} is an apocalyptic number.

18201010911011 is a deficient number, since it is larger than the sum of its proper divisors (1).

18201010911011 is an equidigital number, since it uses as much as digits as its factorization.

18201010911011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 26.

Adding to 18201010911011 its reverse (11011901010281), we get a palindrome (29212911921292).

The spelling of 18201010911011 in words is "eighteen trillion, two hundred one billion, ten million, nine hundred eleven thousand, eleven".