12512338422 has 32 divisors (see below), whose sum is σ = 26540801280. Its totient is φ = 3924037920.

The previous prime is 12512338393. The next prime is 12512338441. The reversal of 12512338422 is 22483321521.

It is a super-2 number, since 2×12512338422² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 734772 + ... + 751607.

It is an arithmetic number, because the mean of its divisors is an integer number (829400040).

Almost surely, 2^12512338422 is an apocalyptic number.

12512338422 is an abundant number, since it is smaller than the sum of its proper divisors (14028462858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12512338422 is a wasteful number, since it uses less digits than its factorization.

12512338422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486468.

The product of its digits is 23040, while the sum is 33.

Adding to 12512338422 its reverse (22483321521), we get a palindrome (34995659943).

The spelling of 12512338422 in words is "twelve billion, five hundred twelve million, three hundred thirty-eight thousand, four hundred twenty-two".