12030040321 has 4 divisors (see below), whose sum is σ = 12955428052. Its totient is φ = 11104652592.

The previous prime is 12030040301. The next prime is 12030040331. The reversal of 12030040321 is 12304003021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12304003021 = 8039 ⋅1530539.

It can be written as a sum of positive squares in 2 ways, for example, as 1247502400 + 10782537921 = 35320^2 + 103839^2 .

It is a cyclic number.

It is not a de Polignac number, because 12030040321 - 2⁷ = 12030040193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12030040295 and 12030040304.

It is not an unprimeable number, because it can be changed into a prime (12030040301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462693846 + ... + 462693871.

It is an arithmetic number, because the mean of its divisors is an integer number (3238857013).

Almost surely, 2^12030040321 is an apocalyptic number.

It is an amenable number.

12030040321 is a deficient number, since it is larger than the sum of its proper divisors (925387731).

12030040321 is an equidigital number, since it uses as much as digits as its factorization.

12030040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925387730.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12030040321 its reverse (12304003021), we get a palindrome (24334043342).

The spelling of 12030040321 in words is "twelve billion, thirty million, forty thousand, three hundred twenty-one".