12135212743 has 8 divisors (see below), whose sum is σ = 12414314000. Its totient is φ = 11859162048.

The previous prime is 12135212717. The next prime is 12135212797. The reversal of 12135212743 is 34721253121.

12135212743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12135212743 - 2⁹ = 12135212231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135212443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754593 + ... + 770506.

It is an arithmetic number, because the mean of its divisors is an integer number (1551789250).

Almost surely, 2^12135212743 is an apocalyptic number.

12135212743 is a deficient number, since it is larger than the sum of its proper divisors (279101257).

12135212743 is a wasteful number, since it uses less digits than its factorization.

12135212743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525281.

The product of its digits is 10080, while the sum is 31.

Adding to 12135212743 its reverse (34721253121), we get a palindrome (46856465864).

The spelling of 12135212743 in words is "twelve billion, one hundred thirty-five million, two hundred twelve thousand, seven hundred forty-three".