12530421322245 has 12 divisors (see below), whose sum is σ = 21719396958636. Its totient is φ = 6682891371840.

The previous prime is 12530421322187. The next prime is 12530421322271. The reversal of 12530421322245 is 54222312403521.

12530421322245 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 0 + 421 + 3 + 2 + 224 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3683877551649 + 8846543770596 = 1919343^2 + 2974314^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12530421322245 is a prime.

It is a super-2 number, since 2×12530421322245² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139226903536 + ... + 139226903625.

It is an arithmetic number, because the mean of its divisors is an integer number (1809949746553).

Almost surely, 2^{12530421322245} is an apocalyptic number.

12530421322245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12530421322245 is a deficient number, since it is larger than the sum of its proper divisors (9188975636391).

12530421322245 is a wasteful number, since it uses less digits than its factorization.

12530421322245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278453807172 (or 278453807169 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 12530421322245 its reverse (54222312403521), we get a palindrome (66752733725766).

The spelling of 12530421322245 in words is "twelve trillion, five hundred thirty billion, four hundred twenty-one million, three hundred twenty-two thousand, two hundred forty-five".