12000213221 has 8 divisors (see below), whose sum is σ = 12064555200. Its totient is φ = 11935912032.

The previous prime is 12000213217. The next prime is 12000213233. The reversal of 12000213221 is 12231200021.

It is a happy number.

12000213221 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 a cyclic number.

It is not a de Polignac number, because 12000213221 - 2² = 12000213217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000213196 and 12000213205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000213241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716681 + ... + 733233.

It is an arithmetic number, because the mean of its divisors is an integer number (1508069400).

Almost surely, 2^12000213221 is an apocalyptic number.

It is an amenable number.

12000213221 is a deficient number, since it is larger than the sum of its proper divisors (64341979).

12000213221 is a wasteful number, since it uses less digits than its factorization.

12000213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20395.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12000213221 its reverse (12231200021), we get a palindrome (24231413242).

The spelling of 12000213221 in words is "twelve billion, two hundred thirteen thousand, two hundred twenty-one".