12001231103121 has 48 divisors (see below), whose sum is σ = 19129016722816. Its totient is φ = 7203695482368.

The previous prime is 12001231103083. The next prime is 12001231103137. The reversal of 12001231103121 is 12130113210021.

12001231103121 is a `hidden beast` number, since 120 + 0 + 1 + 231 + 1 + 0 + 312 + 1 = 666.

It is not a de Polignac number, because 12001231103121 - 2¹⁹ = 12001230578833 is a prime.

It is a super-3 number, since 3×12001231103121³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001231103094 and 12001231103103.

It is not an unprimeable number, because it can be changed into a prime (12001231103021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2016921 + ... + 5298153.

Almost surely, 2^{12001231103121} is an apocalyptic number.

It is an amenable number.

12001231103121 is a deficient number, since it is larger than the sum of its proper divisors (7127785619695).

12001231103121 is a wasteful number, since it uses less digits than its factorization.

12001231103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282022 (or 3282019 counting only the distinct ones).

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

Adding to 12001231103121 its reverse (12130113210021), we get a palindrome (24131344313142).

The spelling of 12001231103121 in words is "twelve trillion, one billion, two hundred thirty-one million, one hundred three thousand, one hundred twenty-one".