12001200121197 has 72 divisors (see below), whose sum is σ = 20220408000000. Its totient is φ = 6839107224768.

The previous prime is 12001200121189. The next prime is 12001200121199. The reversal of 12001200121197 is 79112100210021.

It is not a de Polignac number, because 12001200121197 - 2³ = 12001200121189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12001200121197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001200121199) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 240003804 + ... + 240053802.

It is an arithmetic number, because the mean of its divisors is an integer number (280839000000).

Almost surely, 2^{12001200121197} is an apocalyptic number.

It is an amenable number.

12001200121197 is a deficient number, since it is larger than the sum of its proper divisors (8219207878803).

12001200121197 is a wasteful number, since it uses less digits than its factorization.

12001200121197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51495 (or 51485 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The spelling of 12001200121197 in words is "twelve trillion, one billion, two hundred million, one hundred twenty-one thousand, one hundred ninety-seven".