12132101805 has 8 divisors (see below), whose sum is σ = 19411362912. Its totient is φ = 6470454288.

The previous prime is 12132101789. The next prime is 12132101809. The reversal of 12132101805 is 50810123121.

12132101805 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 not a de Polignac number, because 12132101805 - 2⁴ = 12132101789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132101809) 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, 404403379 + ... + 404403408.

It is an arithmetic number, because the mean of its divisors is an integer number (2426420364).

Almost surely, 2^12132101805 is an apocalyptic number.

12132101805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12132101805 is a deficient number, since it is larger than the sum of its proper divisors (7279261107).

12132101805 is an equidigital number, since it uses as much as digits as its factorization.

12132101805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808806795.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 12132101805 its reverse (50810123121), we get a palindrome (62942224926).

The spelling of 12132101805 in words is "twelve billion, one hundred thirty-two million, one hundred one thousand, eight hundred five".