11212204517 has 2 divisors, whose sum is σ = 11212204518. Its totient is φ = 11212204516.

The previous prime is 11212204511. The next prime is 11212204543. The reversal of 11212204517 is 71540221211.

11212204517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11212204543) can be obtained adding 11212204517 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5643164641 + 5569039876 = 75121^2 + 74626^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212204517 - 2⁴ = 11212204501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212204511) 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, 5606102258 + 5606102259.

It is an arithmetic number, because the mean of its divisors is an integer number (5606102259).

Almost surely, 2^11212204517 is an apocalyptic number.

It is an amenable number.

11212204517 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212204517 is an equidigital number, since it uses as much as digits as its factorization.

11212204517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 11212204517 its reverse (71540221211), we get a palindrome (82752425728).

The spelling of 11212204517 in words is "eleven billion, two hundred twelve million, two hundred four thousand, five hundred seventeen".