12152323121 has 2 divisors, whose sum is σ = 12152323122. Its totient is φ = 12152323120.

The previous prime is 12152323087. The next prime is 12152323187. The reversal of 12152323121 is 12132325121.

12152323121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10966278400 + 1186044721 = 104720^2 + 34439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12152323121 - 2¹⁴ = 12152306737 is a prime.

It is not a weakly prime, because it can be changed into another prime (12152320121) 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 as a sum of consecutive naturals, namely, 6076161560 + 6076161561.

It is an arithmetic number, because the mean of its divisors is an integer number (6076161561).

Almost surely, 2^12152323121 is an apocalyptic number.

It is an amenable number.

12152323121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12152323121 is an equidigital number, since it uses as much as digits as its factorization.

12152323121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

Adding to 12152323121 its reverse (12132325121), we get a palindrome (24284648242).

The spelling of 12152323121 in words is "twelve billion, one hundred fifty-two million, three hundred twenty-three thousand, one hundred twenty-one".