12000020221 has 8 divisors (see below), whose sum is σ = 13786113024. Its totient is φ = 10231878480.

The previous prime is 12000020203. The next prime is 12000020233. The reversal of 12000020221 is 12202000021.

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 12000020221 - 2⁵ = 12000020189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000020198 and 12000020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000020251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4486330 + ... + 4489003.

It is an arithmetic number, because the mean of its divisors is an integer number (1723264128).

Almost surely, 2^12000020221 is an apocalyptic number.

It is an amenable number.

12000020221 is a deficient number, since it is larger than the sum of its proper divisors (1786092803).

12000020221 is an equidigital number, since it uses as much as digits as its factorization.

12000020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975531.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12000020221 its reverse (12202000021), we get a palindrome (24202020242).

The spelling of 12000020221 in words is "twelve billion, twenty thousand, two hundred twenty-one".