12135324571 has 2 divisors, whose sum is σ = 12135324572. Its totient is φ = 12135324570.

The previous prime is 12135324569. The next prime is 12135324613. The reversal of 12135324571 is 17542353121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12135324571 - 2¹ = 12135324569 is a prime.

It is a super-2 number, since 2×12135324571² (a number of 21 digits) contains 22 as substring.

Together with 12135324569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12135324541) 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, 6067662285 + 6067662286.

It is an arithmetic number, because the mean of its divisors is an integer number (6067662286).

Almost surely, 2^12135324571 is an apocalyptic number.

12135324571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12135324571 is an equidigital number, since it uses as much as digits as its factorization.

12135324571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

Adding to 12135324571 its reverse (17542353121), we get a palindrome (29677677692).

It can be divided in two parts, 121353 and 24571, that added together give a square (145924 = 382²).

The spelling of 12135324571 in words is "twelve billion, one hundred thirty-five million, three hundred twenty-four thousand, five hundred seventy-one".