12001230113121 has 12 divisors (see below), whose sum is σ = 17340810666660. Its totient is φ = 7998189073920.

The previous prime is 12001230113111. The next prime is 12001230113177. The reversal of 12001230113121 is 12131103210021.

12001230113121 is a `hidden beast` number, since 1 + 200 + 1 + 230 + 113 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10213297430625 + 1787932682496 = 3195825^2 + 1337136^2 .

It is not a de Polignac number, because 12001230113121 - 2¹⁸ = 12001229850977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001230113094 and 12001230113103.

It is not an unprimeable number, because it can be changed into a prime (12001230113111) 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 11 ways as a sum of consecutive naturals, for example, 219221236 + ... + 219275973.

It is an arithmetic number, because the mean of its divisors is an integer number (1445067555555).

Almost surely, 2^{12001230113121} is an apocalyptic number.

It is an amenable number.

12001230113121 is a deficient number, since it is larger than the sum of its proper divisors (5339580553539).

12001230113121 is a wasteful number, since it uses less digits than its factorization.

12001230113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438500256 (or 438500253 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12001230113121 its reverse (12131103210021), we get a palindrome (24132333323142).

The spelling of 12001230113121 in words is "twelve trillion, one billion, two hundred thirty million, one hundred thirteen thousand, one hundred twenty-one".