12000212444221 has 4 divisors (see below), whose sum is σ = 12000580457344. Its totient is φ = 11999844431100.

The previous prime is 12000212444189. The next prime is 12000212444261. The reversal of 12000212444221 is 12244421200021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12000212444221 - 2⁵ = 12000212444189 is a prime.

It is a super-3 number, since 3×12000212444221³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000212444261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183957645 + ... + 184022866.

It is an arithmetic number, because the mean of its divisors is an integer number (3000145114336).

Almost surely, 2^{12000212444221} is an apocalyptic number.

It is an amenable number.

12000212444221 is a deficient number, since it is larger than the sum of its proper divisors (368013123).

12000212444221 is an equidigital number, since it uses as much as digits as its factorization.

12000212444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368013122.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 12000212444221 its reverse (12244421200021), we get a palindrome (24244633644242).

The spelling of 12000212444221 in words is "twelve trillion, two hundred twelve million, four hundred forty-four thousand, two hundred twenty-one".