12001020200121 has 8 divisors (see below), whose sum is σ = 16942616753184. Its totient is φ = 7530051890240.

The previous prime is 12001020200111. The next prime is 12001020200167. The reversal of 12001020200121 is 12100202010021.

12001020200121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001020200121 - 2²³ = 12001011811513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001020200097 and 12001020200106.

It is not an unprimeable number, because it can be changed into a prime (12001020200111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117657060735 + ... + 117657060836.

It is an arithmetic number, because the mean of its divisors is an integer number (2117827094148).

Almost surely, 2^{12001020200121} is an apocalyptic number.

It is an amenable number.

12001020200121 is a deficient number, since it is larger than the sum of its proper divisors (4941596553063).

12001020200121 is a wasteful number, since it uses less digits than its factorization.

12001020200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235314121591.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001020200121 its reverse (12100202010021), we get a palindrome (24101222210142).

The spelling of 12001020200121 in words is "twelve trillion, one billion, twenty million, two hundred thousand, one hundred twenty-one".