12001020211201 has 16 divisors (see below), whose sum is σ = 13839760471680. Its totient is φ = 10193620152960.

The previous prime is 12001020211123. The next prime is 12001020211211. The reversal of 12001020211201 is 10211202010021.

It is a cyclic number.

It is not a de Polignac number, because 12001020211201 - 2⁹ = 12001020210689 is a prime.

It is a super-2 number, since 2×12001020211201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001020211211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10410466 + ... + 11505643.

It is an arithmetic number, because the mean of its divisors is an integer number (864985029480).

Almost surely, 2^{12001020211201} is an apocalyptic number.

It is an amenable number.

12001020211201 is a deficient number, since it is larger than the sum of its proper divisors (1838740260479).

12001020211201 is a wasteful number, since it uses less digits than its factorization.

12001020211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21916824.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001020211201 its reverse (10211202010021), we get a palindrome (22212222221222).

The spelling of 12001020211201 in words is "twelve trillion, one billion, twenty million, two hundred eleven thousand, two hundred one".