12132103021 has 4 divisors (see below), whose sum is σ = 12162358044. Its totient is φ = 12101848000.

The previous prime is 12132103013. The next prime is 12132103031. The reversal of 12132103021 is 12030123121.

12132103021 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7803778921 + 4328324100 = 88339^2 + 65790^2 .

It is a cyclic number.

It is not a de Polignac number, because 12132103021 - 2³ = 12132103013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12132102986 and 12132103004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132103031) 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, 15126910 + ... + 15127711.

It is an arithmetic number, because the mean of its divisors is an integer number (3040589511).

Almost surely, 2^12132103021 is an apocalyptic number.

It is an amenable number.

12132103021 is a deficient number, since it is larger than the sum of its proper divisors (30255023).

12132103021 is an equidigital number, since it uses as much as digits as its factorization.

12132103021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30255022.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12132103021 its reverse (12030123121), we get a palindrome (24162226142).

The spelling of 12132103021 in words is "twelve billion, one hundred thirty-two million, one hundred three thousand, twenty-one".