12201212012117 has 2 divisors, whose sum is σ = 12201212012118. Its totient is φ = 12201212012116.

The previous prime is 12201212012089. The next prime is 12201212012137. The reversal of 12201212012117 is 71121021210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9105674388721 + 3095537623396 = 3017561^2 + 1759414^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201212012117 - 2⁸ = 12201212011861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201212012092 and 12201212012101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201212012137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100606006058 + 6100606006059.

It is an arithmetic number, because the mean of its divisors is an integer number (6100606006059).

Almost surely, 2^{12201212012117} is an apocalyptic number.

It is an amenable number.

12201212012117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201212012117 is an equidigital number, since it uses as much as digits as its factorization.

12201212012117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 12201212012117 its reverse (71121021210221), we get a palindrome (83322233222338).

The spelling of 12201212012117 in words is "twelve trillion, two hundred one billion, two hundred twelve million, twelve thousand, one hundred seventeen".