12023230321 has 4 divisors (see below), whose sum is σ = 12437824500. Its totient is φ = 11608636144.

The previous prime is 12023230319. The next prime is 12023230339. The reversal of 12023230321 is 12303232021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12303232021 = 82021 ⋅150001.

It can be written as a sum of positive squares in 2 ways, for example, as 4281870096 + 7741360225 = 65436^2 + 87985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12023230321 - 2¹ = 12023230319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12023240321) 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, 207297046 + ... + 207297103.

It is an arithmetic number, because the mean of its divisors is an integer number (3109456125).

Almost surely, 2^12023230321 is an apocalyptic number.

It is an amenable number.

12023230321 is a deficient number, since it is larger than the sum of its proper divisors (414594179).

12023230321 is an equidigital number, since it uses as much as digits as its factorization.

12023230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414594178.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12023230321 its reverse (12303232021), we get a palindrome (24326462342).

The spelling of 12023230321 in words is "twelve billion, twenty-three million, two hundred thirty thousand, three hundred twenty-one".