12002128717 has 2 divisors, whose sum is σ = 12002128718. Its totient is φ = 12002128716.

The previous prime is 12002128687. The next prime is 12002128769. The reversal of 12002128717 is 71782120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10825570116 + 1176558601 = 104046^2 + 34301^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002128717 - 2¹⁵ = 12002095949 is a prime.

It is a super-3 number, since 3×12002128717³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12002129717) 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, 6001064358 + 6001064359.

It is an arithmetic number, because the mean of its divisors is an integer number (6001064359).

Almost surely, 2^12002128717 is an apocalyptic number.

It is an amenable number.

12002128717 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002128717 is an equidigital number, since it uses as much as digits as its factorization.

12002128717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 31.

Adding to 12002128717 its reverse (71782120021), we get a palindrome (83784248738).

The spelling of 12002128717 in words is "twelve billion, two million, one hundred twenty-eight thousand, seven hundred seventeen".