12001331032121 has 16 divisors (see below), whose sum is σ = 12253419302784. Its totient is φ = 11751417304704.

The previous prime is 12001331032087. The next prime is 12001331032123. The reversal of 12001331032121 is 12123013310021.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001331032121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12001331032093 and 12001331032102.

It is not an unprimeable number, because it can be changed into a prime (12001331032123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56725085 + ... + 56936261.

It is an arithmetic number, because the mean of its divisors is an integer number (765838706424).

Almost surely, 2^{12001331032121} is an apocalyptic number.

It is an amenable number.

12001331032121 is a deficient number, since it is larger than the sum of its proper divisors (252088270663).

12001331032121 is a wasteful number, since it uses less digits than its factorization.

12001331032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216320.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12001331032121 its reverse (12123013310021), we get a palindrome (24124344342142).

The spelling of 12001331032121 in words is "twelve trillion, one billion, three hundred thirty-one million, thirty-two thousand, one hundred twenty-one".