12001121200221 has 8 divisors (see below), whose sum is σ = 16433967769824. Its totient is φ = 7784511048720.

The previous prime is 12001121200213. The next prime is 12001121200241. The reversal of 12001121200221 is 12200212110021.

12001121200221 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 not a de Polignac number, because 12001121200221 - 2³ = 12001121200213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12001121200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001121200241) 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, 54059104395 + ... + 54059104616.

It is an arithmetic number, because the mean of its divisors is an integer number (2054245971228).

Almost surely, 2^{12001121200221} is an apocalyptic number.

It is an amenable number.

12001121200221 is a deficient number, since it is larger than the sum of its proper divisors (4432846569603).

12001121200221 is a wasteful number, since it uses less digits than its factorization.

12001121200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108118209051.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12001121200221 its reverse (12200212110021), we get a palindrome (24201333310242).

The spelling of 12001121200221 in words is "twelve trillion, one billion, one hundred twenty-one million, two hundred thousand, two hundred twenty-one".