12452533321 has 2 divisors, whose sum is σ = 12452533322. Its totient is φ = 12452533320.

The previous prime is 12452533319. The next prime is 12452533349. The reversal of 12452533321 is 12333525421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12229926921 + 222606400 = 110589^2 + 14920^2 .

It is a cyclic number.

It is not a de Polignac number, because 12452533321 - 2¹ = 12452533319 is a prime.

It is a super-2 number, since 2×12452533321² (a number of 21 digits) contains 22 as substring.

Together with 12452533319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12452533361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6226266660 + 6226266661.

It is an arithmetic number, because the mean of its divisors is an integer number (6226266661).

Almost surely, 2^12452533321 is an apocalyptic number.

It is an amenable number.

12452533321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12452533321 is an equidigital number, since it uses as much as digits as its factorization.

12452533321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The spelling of 12452533321 in words is "twelve billion, four hundred fifty-two million, five hundred thirty-three thousand, three hundred twenty-one".