11212247117 has 2 divisors, whose sum is σ = 11212247118. Its totient is φ = 11212247116.

The previous prime is 11212247107. The next prime is 11212247129. The reversal of 11212247117 is 71174221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11072511076 + 139736041 = 105226^2 + 11821^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212247117 - 2²⁰ = 11211198541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212247117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212247107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606123558 + 5606123559.

It is an arithmetic number, because the mean of its divisors is an integer number (5606123559).

Almost surely, 2^11212247117 is an apocalyptic number.

It is an amenable number.

11212247117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212247117 is an equidigital number, since it uses as much as digits as its factorization.

11212247117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 29.

Adding to 11212247117 its reverse (71174221211), we get a palindrome (82386468328).

The spelling of 11212247117 in words is "eleven billion, two hundred twelve million, two hundred forty-seven thousand, one hundred seventeen".