12135034013 has 4 divisors (see below), whose sum is σ = 12139165920. Its totient is φ = 12130902108.

The previous prime is 12135033997. The next prime is 12135034049. The reversal of 12135034013 is 31043053121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12135034013 - 2⁴ = 12135033997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12135034013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135034063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061545 + ... + 2067422.

It is an arithmetic number, because the mean of its divisors is an integer number (3034791480).

Almost surely, 2^12135034013 is an apocalyptic number.

It is an amenable number.

12135034013 is a deficient number, since it is larger than the sum of its proper divisors (4131907).

12135034013 is an equidigital number, since it uses as much as digits as its factorization.

12135034013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131906.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 12135034013 its reverse (31043053121), we get a palindrome (43178087134).

The spelling of 12135034013 in words is "twelve billion, one hundred thirty-five million, thirty-four thousand, thirteen".