18110112212011 has 2 divisors, whose sum is σ = 18110112212012. Its totient is φ = 18110112212010.

The previous prime is 18110112211987. The next prime is 18110112212039. The reversal of 18110112212011 is 11021221101181.

It is a weak prime.

It is an emirp because it is prime and its reverse (11021221101181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18110112212011 - 2⁵ = 18110112211979 is a prime.

It is not a weakly prime, because it can be changed into another prime (18110112215011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9055056106005 + 9055056106006.

It is an arithmetic number, because the mean of its divisors is an integer number (9055056106006).

Almost surely, 2^{18110112212011} is an apocalyptic number.

18110112212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

18110112212011 is an equidigital number, since it uses as much as digits as its factorization.

18110112212011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 22.

Adding to 18110112212011 its reverse (11021221101181), we get a palindrome (29131333313192).

The spelling of 18110112212011 in words is "eighteen trillion, one hundred ten billion, one hundred twelve million, two hundred twelve thousand, eleven".