12321033121 has 2 divisors, whose sum is σ = 12321033122. Its totient is φ = 12321033120.

The previous prime is 12321033107. The next prime is 12321033149. The reversal of 12321033121 is 12133012321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10138274721 + 2182758400 = 100689^2 + 46720^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321033121 - 2¹⁹ = 12320508833 is a prime.

It is not a weakly prime, because it can be changed into another prime (12321033161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160516560 + 6160516561.

It is an arithmetic number, because the mean of its divisors is an integer number (6160516561).

Almost surely, 2^12321033121 is an apocalyptic number.

It is an amenable number.

12321033121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321033121 is an equidigital number, since it uses as much as digits as its factorization.

12321033121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12321033121 its reverse (12133012321), we get a palindrome (24454045442).

The spelling of 12321033121 in words is "twelve billion, three hundred twenty-one million, thirty-three thousand, one hundred twenty-one".