12111000001117 has 2 divisors, whose sum is σ = 12111000001118. Its totient is φ = 12111000001116.

The previous prime is 12111000001109. The next prime is 12111000001151. The reversal of 12111000001117 is 71110000011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12038825029401 + 72174971716 = 3469701^2 + 268654^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111000001117 - 2³ = 12111000001109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111000001117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111000001187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055500000558 + 6055500000559.

It is an arithmetic number, because the mean of its divisors is an integer number (6055500000559).

Almost surely, 2^{12111000001117} is an apocalyptic number.

It is an amenable number.

12111000001117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111000001117 is an equidigital number, since it uses as much as digits as its factorization.

12111000001117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 16.

Adding to 12111000001117 its reverse (71110000011121), we get a palindrome (83221000012238).

The spelling of 12111000001117 in words is "twelve trillion, one hundred eleven billion, one thousand, one hundred seventeen".