12404212361 has 2 divisors, whose sum is σ = 12404212362. Its totient is φ = 12404212360.

The previous prime is 12404212357. The next prime is 12404212391. The reversal of 12404212361 is 16321240421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11847016336 + 557196025 = 108844^2 + 23605^2 .

It is an emirp because it is prime and its reverse (16321240421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12404212361 - 2² = 12404212357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12404212361.

It is not a weakly prime, because it can be changed into another prime (12404212391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6202106180 + 6202106181.

It is an arithmetic number, because the mean of its divisors is an integer number (6202106181).

Almost surely, 2^12404212361 is an apocalyptic number.

It is an amenable number.

12404212361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12404212361 is an equidigital number, since it uses as much as digits as its factorization.

12404212361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 12404212361 its reverse (16321240421), we get a palindrome (28725452782).

The spelling of 12404212361 in words is "twelve billion, four hundred four million, two hundred twelve thousand, three hundred sixty-one".