11212012117 has 2 divisors, whose sum is σ = 11212012118. Its totient is φ = 11212012116.

The previous prime is 11212012109. The next prime is 11212012139. The reversal of 11212012117 is 71121021211.

11212012117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6597663076 + 4614349041 = 81226^2 + 67929^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212012117 - 2³ = 11212012109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212012094 and 11212012103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212012417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606006058 + 5606006059.

It is an arithmetic number, because the mean of its divisors is an integer number (5606006059).

Almost surely, 2^11212012117 is an apocalyptic number.

It is an amenable number.

11212012117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212012117 is an equidigital number, since it uses as much as digits as its factorization.

11212012117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 11212012117 its reverse (71121021211), we get a palindrome (82333033328).

The spelling of 11212012117 in words is "eleven billion, two hundred twelve million, twelve thousand, one hundred seventeen".