12322121531 has 2 divisors, whose sum is σ = 12322121532. Its totient is φ = 12322121530.

The previous prime is 12322121501. The next prime is 12322121549. The reversal of 12322121531 is 13512122321.

It is a strong prime.

It is an emirp because it is prime and its reverse (13512122321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12322121531 - 2¹⁰ = 12322120507 is a prime.

It is a super-2 number, since 2×12322121531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12322121497 and 12322121506.

It is not a weakly prime, because it can be changed into another prime (12322121501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6161060765 + 6161060766.

It is an arithmetic number, because the mean of its divisors is an integer number (6161060766).

Almost surely, 2^12322121531 is an apocalyptic number.

12322121531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12322121531 is an equidigital number, since it uses as much as digits as its factorization.

12322121531 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 12322121531 its reverse (13512122321), we get a palindrome (25834243852).

The spelling of 12322121531 in words is "twelve billion, three hundred twenty-two million, one hundred twenty-one thousand, five hundred thirty-one".