12122023321 has 4 divisors (see below), whose sum is σ = 12122432100. Its totient is φ = 12121614544.

The previous prime is 12122023267. The next prime is 12122023343. The reversal of 12122023321 is 12332022121.

12122023321 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: 12332022121 = 33493 ⋅368197.

It can be written as a sum of positive squares in 2 ways, for example, as 8223769225 + 3898254096 = 90685^2 + 62436^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122023321 - 2¹⁷ = 12121892249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122023421) 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, 156106 + ... + 220483.

It is an arithmetic number, because the mean of its divisors is an integer number (3030608025).

Almost surely, 2^12122023321 is an apocalyptic number.

It is an amenable number.

12122023321 is a deficient number, since it is larger than the sum of its proper divisors (408779).

12122023321 is an equidigital number, since it uses as much as digits as its factorization.

12122023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408778.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12122023321 its reverse (12332022121), we get a palindrome (24454045442).

The spelling of 12122023321 in words is "twelve billion, one hundred twenty-two million, twenty-three thousand, three hundred twenty-one".