21110011011163 has 2 divisors, whose sum is σ = 21110011011164. Its totient is φ = 21110011011162.

The previous prime is 21110011011157. The next prime is 21110011011253. The reversal of 21110011011163 is 36111011001112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21110011011163 is a prime.

It is a super-2 number, since 2×21110011011163² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21110011011163.

It is not a weakly prime, because it can be changed into another prime (21110011051163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555005505581 + 10555005505582.

It is an arithmetic number, because the mean of its divisors is an integer number (10555005505582).

Almost surely, 2^{21110011011163} is an apocalyptic number.

21110011011163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110011011163 is an equidigital number, since it uses as much as digits as its factorization.

21110011011163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 21110011011163 its reverse (36111011001112), we get a palindrome (57221022012275).

The spelling of 21110011011163 in words is "twenty-one trillion, one hundred ten billion, eleven million, eleven thousand, one hundred sixty-three".