12316135762221 has 4 divisors (see below), whose sum is σ = 16421514349632. Its totient is φ = 8210757174812.

The previous prime is 12316135762207. The next prime is 12316135762223. The reversal of 12316135762221 is 12226753161321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12316135762221 - 2¹⁵ = 12316135729453 is a prime.

It is a super-2 number, since 2×12316135762221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12316135762223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052689293701 + ... + 2052689293706.

It is an arithmetic number, because the mean of its divisors is an integer number (4105378587408).

Almost surely, 2^{12316135762221} is an apocalyptic number.

It is an amenable number.

12316135762221 is a deficient number, since it is larger than the sum of its proper divisors (4105378587411).

12316135762221 is an equidigital number, since it uses as much as digits as its factorization.

12316135762221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105378587410.

The product of its digits is 181440, while the sum is 42.

The spelling of 12316135762221 in words is "twelve trillion, three hundred sixteen billion, one hundred thirty-five million, seven hundred sixty-two thousand, two hundred twenty-one".