12003132321 has 12 divisors (see below), whose sum is σ = 17622085780. Its totient is φ = 7870906080.

The previous prime is 12003132311. The next prime is 12003132347. The reversal of 12003132321 is 12323130021.

12003132321 is a `hidden beast` number, since 120 + 0 + 313 + 232 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 954810000 + 11048322321 = 30900^2 + 105111^2 .

It is not a de Polignac number, because 12003132321 - 2⁵ = 12003132289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003132294 and 12003132303.

It is not an unprimeable number, because it can be changed into a prime (12003132311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10931266 + ... + 10932363.

Almost surely, 2^12003132321 is an apocalyptic number.

It is an amenable number.

12003132321 is a deficient number, since it is larger than the sum of its proper divisors (5618953459).

12003132321 is a wasteful number, since it uses less digits than its factorization.

12003132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21863696 (or 21863693 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12003132321 its reverse (12323130021), we get a palindrome (24326262342).

The spelling of 12003132321 in words is "twelve billion, three million, one hundred thirty-two thousand, three hundred twenty-one".