12012202117 has 2 divisors, whose sum is σ = 12012202118. Its totient is φ = 12012202116.

The previous prime is 12012202093. The next prime is 12012202151. The reversal of 12012202117 is 71120221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6663620161 + 5348581956 = 81631^2 + 73134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012202117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012202094 and 12012202103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012202717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006101058 + 6006101059.

It is an arithmetic number, because the mean of its divisors is an integer number (6006101059).

Almost surely, 2^12012202117 is an apocalyptic number.

It is an amenable number.

12012202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012202117 is an equidigital number, since it uses as much as digits as its factorization.

12012202117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 12012202117 its reverse (71120221021), we get a palindrome (83132423138).

The spelling of 12012202117 in words is "twelve billion, twelve million, two hundred two thousand, one hundred seventeen".