12043121121 has 16 divisors (see below), whose sum is σ = 17886169920. Its totient is φ = 8008718400.

The previous prime is 12043121107. The next prime is 12043121143. The reversal of 12043121121 is 12112134021.

12043121121 is a `hidden beast` number, since 1 + 2 + 0 + 431 + 211 + 21 = 666.

It is not a de Polignac number, because 12043121121 - 2⁵ = 12043121089 is a prime.

It is a super-3 number, since 3×12043121121³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12043121094 and 12043121103.

It is not an unprimeable number, because it can be changed into a prime (12043121171) 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 15 ways as a sum of consecutive naturals, for example, 545335 + ... + 566988.

It is an arithmetic number, because the mean of its divisors is an integer number (1117885620).

Almost surely, 2^12043121121 is an apocalyptic number.

It is an amenable number.

12043121121 is a deficient number, since it is larger than the sum of its proper divisors (5843048799).

12043121121 is a wasteful number, since it uses less digits than its factorization.

12043121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112733 (or 1112727 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12043121121 its reverse (12112134021), we get a palindrome (24155255142).

The spelling of 12043121121 in words is "twelve billion, forty-three million, one hundred twenty-one thousand, one hundred twenty-one".