12333312421 has 2 divisors, whose sum is σ = 12333312422. Its totient is φ = 12333312420.

The previous prime is 12333312419. The next prime is 12333312437. The reversal of 12333312421 is 12421333321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8956540321 + 3376772100 = 94639^2 + 58110^2 .

It is an emirp because it is prime and its reverse (12421333321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12333312421 - 2¹ = 12333312419 is a prime.

It is a super-2 number, since 2×12333312421² (a number of 21 digits) contains 22 as substring.

Together with 12333312419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12333312461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6166656210 + 6166656211.

It is an arithmetic number, because the mean of its divisors is an integer number (6166656211).

Almost surely, 2^12333312421 is an apocalyptic number.

It is an amenable number.

12333312421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12333312421 is an equidigital number, since it uses as much as digits as its factorization.

12333312421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

Adding to 12333312421 its reverse (12421333321), we get a palindrome (24754645742).

The spelling of 12333312421 in words is "twelve billion, three hundred thirty-three million, three hundred twelve thousand, four hundred twenty-one".