12021125321 has 2 divisors, whose sum is σ = 12021125322. Its totient is φ = 12021125320.

The previous prime is 12021125299. The next prime is 12021125353. The reversal of 12021125321 is 12352112021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10533943225 + 1487182096 = 102635^2 + 38564^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021125321 - 2¹⁴ = 12021108937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021125293 and 12021125302.

It is not a weakly prime, because it can be changed into another prime (12021125821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010562660 + 6010562661.

It is an arithmetic number, because the mean of its divisors is an integer number (6010562661).

Almost surely, 2^12021125321 is an apocalyptic number.

It is an amenable number.

12021125321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021125321 is an equidigital number, since it uses as much as digits as its factorization.

12021125321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 12021125321 its reverse (12352112021), we get a palindrome (24373237342).

The spelling of 12021125321 in words is "twelve billion, twenty-one million, one hundred twenty-five thousand, three hundred twenty-one".