12182117851 has 2 divisors, whose sum is σ = 12182117852. Its totient is φ = 12182117850.

The previous prime is 12182117821. The next prime is 12182117917. The reversal of 12182117851 is 15871128121.

It is a weak prime.

It is an emirp because it is prime and its reverse (15871128121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12182117851 - 2⁷ = 12182117723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12182117851.

It is not a weakly prime, because it can be changed into another prime (12182117821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6091058925 + 6091058926.

It is an arithmetic number, because the mean of its divisors is an integer number (6091058926).

Almost surely, 2^12182117851 is an apocalyptic number.

12182117851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12182117851 is an equidigital number, since it uses as much as digits as its factorization.

12182117851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 37.

The spelling of 12182117851 in words is "twelve billion, one hundred eighty-two million, one hundred seventeen thousand, eight hundred fifty-one".