12012000221021 has 8 divisors (see below), whose sum is σ = 12021872594904. Its totient is φ = 12002128578880.

The previous prime is 12012000220999. The next prime is 12012000221041. The reversal of 12012000221021 is 12012200021021.

12012000221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 842962696900 + 11169037524121 = 918130^2 + 3342011^2 .

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 12012000221021 - 2¹⁰ = 12012000219997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012000220987 and 12012000221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012000221041) 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, 35512331 + ... + 35848983.

It is an arithmetic number, because the mean of its divisors is an integer number (1502734074363).

Almost surely, 2^{12012000221021} is an apocalyptic number.

It is an amenable number.

12012000221021 is a deficient number, since it is larger than the sum of its proper divisors (9872373883).

12012000221021 is a wasteful number, since it uses less digits than its factorization.

12012000221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365871.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12012000221021 its reverse (12012200021021), we get a palindrome (24024200242042).

The spelling of 12012000221021 in words is "twelve trillion, twelve billion, two hundred twenty-one thousand, twenty-one".