12132030021 has 16 divisors (see below), whose sum is σ = 16231777920. Its totient is φ = 8060180480.

The previous prime is 12132029989. The next prime is 12132030047. The reversal of 12132030021 is 12003023121.

It is a cyclic number.

It is not a de Polignac number, because 12132030021 - 2⁵ = 12132029989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132030721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2760736 + ... + 2765126.

It is an arithmetic number, because the mean of its divisors is an integer number (1014486120).

Almost surely, 2^12132030021 is an apocalyptic number.

It is an amenable number.

12132030021 is a deficient number, since it is larger than the sum of its proper divisors (4099747899).

12132030021 is a wasteful number, since it uses less digits than its factorization.

12132030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7356.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12132030021 its reverse (12003023121), we get a palindrome (24135053142).

The spelling of 12132030021 in words is "twelve billion, one hundred thirty-two million, thirty thousand, twenty-one".