12000020211221 has 8 divisors (see below), whose sum is σ = 13801661099520. Its totient is φ = 10220217394608.

The previous prime is 12000020211197. The next prime is 12000020211233. The reversal of 12000020211221 is 12211202000021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000020211221 is a prime.

It is a super-3 number, since 3×12000020211221³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12000020211196 and 12000020211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000020211251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5459516741 + ... + 5459518938.

It is an arithmetic number, because the mean of its divisors is an integer number (1725207637440).

Almost surely, 2^{12000020211221} is an apocalyptic number.

It is an amenable number.

12000020211221 is a deficient number, since it is larger than the sum of its proper divisors (1801640888299).

12000020211221 is a wasteful number, since it uses less digits than its factorization.

12000020211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10919035843.

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

Adding to 12000020211221 its reverse (12211202000021), we get a palindrome (24211222211242).

The spelling of 12000020211221 in words is "twelve trillion, twenty million, two hundred eleven thousand, two hundred twenty-one".