12111021163 has 2 divisors, whose sum is σ = 12111021164. Its totient is φ = 12111021162.

The previous prime is 12111021161. The next prime is 12111021253. The reversal of 12111021163 is 36112011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111021163 - 2¹ = 12111021161 is a prime.

It is a super-2 number, since 2×12111021163² (a number of 21 digits) contains 22 as substring.

Together with 12111021161, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12111021163.

It is not a weakly prime, because it can be changed into another prime (12111021161) 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, 6055510581 + 6055510582.

It is an arithmetic number, because the mean of its divisors is an integer number (6055510582).

Almost surely, 2^12111021163 is an apocalyptic number.

12111021163 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111021163 is an equidigital number, since it uses as much as digits as its factorization.

12111021163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12111021163 its reverse (36112011121), we get a palindrome (48223032284).

The spelling of 12111021163 in words is "twelve billion, one hundred eleven million, twenty-one thousand, one hundred sixty-three".