12340205401 has 2 divisors, whose sum is σ = 12340205402. Its totient is φ = 12340205400.

The previous prime is 12340205399. The next prime is 12340205413. The reversal of 12340205401 is 10450204321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11475551376 + 864654025 = 107124^2 + 29405^2 .

It is an emirp because it is prime and its reverse (10450204321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12340205401 - 2¹ = 12340205399 is a prime.

Together with 12340205399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12340205431) 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, 6170102700 + 6170102701.

It is an arithmetic number, because the mean of its divisors is an integer number (6170102701).

Almost surely, 2^12340205401 is an apocalyptic number.

It is an amenable number.

12340205401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340205401 is an equidigital number, since it uses as much as digits as its factorization.

12340205401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12340205401 its reverse (10450204321), we get a palindrome (22790409722).

The spelling of 12340205401 in words is "twelve billion, three hundred forty million, two hundred five thousand, four hundred one".