12012020110221 has 16 divisors (see below), whose sum is σ = 16166739663360. Its totient is φ = 7932997192880.

The previous prime is 12012020110177. The next prime is 12012020110247. The reversal of 12012020110221 is 12201102021021.

It is a cyclic number.

It is not a de Polignac number, because 12012020110221 - 2⁹ = 12012020109709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12012020110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012020110021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42384915 + ... + 42667376.

It is an arithmetic number, because the mean of its divisors is an integer number (1010421228960).

Almost surely, 2^{12012020110221} is an apocalyptic number.

It is an amenable number.

12012020110221 is a deficient number, since it is larger than the sum of its proper divisors (4154719553139).

12012020110221 is a wasteful number, since it uses less digits than its factorization.

12012020110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85052736.

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

Adding to 12012020110221 its reverse (12201102021021), we get a palindrome (24213122131242).

The spelling of 12012020110221 in words is "twelve trillion, twelve billion, twenty million, one hundred ten thousand, two hundred twenty-one".