12135443101 has 4 divisors (see below), whose sum is σ = 12417662752. Its totient is φ = 11853223452.

The previous prime is 12135443087. The next prime is 12135443119. The reversal of 12135443101 is 10134453121.

12135443101 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, 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 12135443101 - 2⁵ = 12135443069 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 (12135443141) 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 3 ways as a sum of consecutive naturals, for example, 141109761 + ... + 141109846.

It is an arithmetic number, because the mean of its divisors is an integer number (3104415688).

Almost surely, 2^12135443101 is an apocalyptic number.

It is an amenable number.

12135443101 is a deficient number, since it is larger than the sum of its proper divisors (282219651).

12135443101 is an equidigital number, since it uses as much as digits as its factorization.

12135443101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282219650.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 12135443101 its reverse (10134453121), we get a palindrome (22269896222).

The spelling of 12135443101 in words is "twelve billion, one hundred thirty-five million, four hundred forty-three thousand, one hundred one".