12000002000121 has 40 divisors (see below), whose sum is σ = 18259457451840. Its totient is φ = 7852525769952.

The previous prime is 12000002000059. The next prime is 12000002000167. The reversal of 12000002000121 is 12100020000021.

It is not a de Polignac number, because 12000002000121 - 2¹⁵ = 12000001967353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12000002000191) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5406501 + ... + 7295906.

It is an arithmetic number, because the mean of its divisors is an integer number (456486436296).

Almost surely, 2^{12000002000121} is an apocalyptic number.

It is an amenable number.

12000002000121 is a deficient number, since it is larger than the sum of its proper divisors (6259455451719).

12000002000121 is a wasteful number, since it uses less digits than its factorization.

12000002000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12702635 (or 12702626 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000002000121 its reverse (12100020000021), we get a palindrome (24100022000142).

The spelling of 12000002000121 in words is "twelve trillion, two million, one hundred twenty-one", and thus it is an aban number.