12001120011321 has 16 divisors (see below), whose sum is σ = 18877337776128. Its totient is φ = 6636564061200.

The previous prime is 12001120011313. The next prime is 12001120011323. The reversal of 12001120011321 is 12311002110021.

It is not a de Polignac number, because 12001120011321 - 2³ = 12001120011313 is a prime.

It is a super-2 number, since 2×12001120011321² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12001120011321.

It is not an unprimeable number, because it can be changed into a prime (12001120011323) 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, 9217449435 + ... + 9217450736.

It is an arithmetic number, because the mean of its divisors is an integer number (1179833611008).

Almost surely, 2^{12001120011321} is an apocalyptic number.

It is an amenable number.

12001120011321 is a deficient number, since it is larger than the sum of its proper divisors (6876217764807).

12001120011321 is a wasteful number, since it uses less digits than its factorization.

12001120011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18434900212.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12001120011321 its reverse (12311002110021), we get a palindrome (24312122121342).

The spelling of 12001120011321 in words is "twelve trillion, one billion, one hundred twenty million, eleven thousand, three hundred twenty-one".