12313201121 has 8 divisors (see below), whose sum is σ = 13280686440. Its totient is φ = 11348618112.

The previous prime is 12313201111. The next prime is 12313201127. The reversal of 12313201121 is 12110231321.

It can be written as a sum of positive squares in 4 ways, for example, as 1079521 + 12312121600 = 1039^2 + 110960^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12313201121 - 2¹⁸ = 12312938977 is a prime.

It is a super-2 number, since 2×12313201121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12313201121.

It is not an unprimeable number, because it can be changed into a prime (12313201127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716756 + ... + 733733.

It is an arithmetic number, because the mean of its divisors is an integer number (1660085805).

Almost surely, 2^12313201121 is an apocalyptic number.

It is an amenable number.

12313201121 is a deficient number, since it is larger than the sum of its proper divisors (967485319).

12313201121 is a wasteful number, since it uses less digits than its factorization.

12313201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451155.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12313201121 its reverse (12110231321), we get a palindrome (24423432442).

The spelling of 12313201121 in words is "twelve billion, three hundred thirteen million, two hundred one thousand, one hundred twenty-one".