12021330023 has 4 divisors (see below), whose sum is σ = 12021933120. Its totient is φ = 12020726928.

The previous prime is 12021330019. The next prime is 12021330031. The reversal of 12021330023 is 32003312021.

12021330023 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, and also an emirpimes, since its reverse is a distinct semiprime: 32003312021 = 149 ⋅214787329.

It is a cyclic number.

It is not a de Polignac number, because 12021330023 - 2² = 12021330019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021329983 and 12021330010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021330623) 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, 270590 + ... + 311867.

It is an arithmetic number, because the mean of its divisors is an integer number (3005483280).

Almost surely, 2^12021330023 is an apocalyptic number.

12021330023 is a deficient number, since it is larger than the sum of its proper divisors (603097).

12021330023 is an equidigital number, since it uses as much as digits as its factorization.

12021330023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603096.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12021330023 its reverse (32003312021), we get a palindrome (44024642044).

The spelling of 12021330023 in words is "twelve billion, twenty-one million, three hundred thirty thousand, twenty-three".