12422143520405 has 4 divisors (see below), whose sum is σ = 14906572224492. Its totient is φ = 9937714816320.

The previous prime is 12422143520333. The next prime is 12422143520509. The reversal of 12422143520405 is 50402534122421.

12422143520405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8110204056964 + 4311939463441 = 2847842^2 + 2076521^2 .

It is not a de Polignac number, because 12422143520405 - 2¹⁶ = 12422143454869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242214352036 + ... + 1242214352045.

It is an arithmetic number, because the mean of its divisors is an integer number (3726643056123).

Almost surely, 2^{12422143520405} is an apocalyptic number.

It is an amenable number.

12422143520405 is a deficient number, since it is larger than the sum of its proper divisors (2484428704087).

12422143520405 is an equidigital number, since it uses as much as digits as its factorization.

12422143520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484428704086.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 12422143520405 its reverse (50402534122421), we get a palindrome (62824677642826).

The spelling of 12422143520405 in words is "twelve trillion, four hundred twenty-two billion, one hundred forty-three million, five hundred twenty thousand, four hundred five".