12001313213221 has 8 divisors (see below), whose sum is σ = 12457589163264. Its totient is φ = 11553409299120.

The previous prime is 12001313213213. The next prime is 12001313213269. The reversal of 12001313213221 is 12231231310021.

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 12001313213221 - 2³ = 12001313213213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001313213192 and 12001313213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001313213621) 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, 2093006065 + ... + 2093011798.

It is an arithmetic number, because the mean of its divisors is an integer number (1557198645408).

Almost surely, 2^{12001313213221} is an apocalyptic number.

It is an amenable number.

12001313213221 is a deficient number, since it is larger than the sum of its proper divisors (456275950043).

12001313213221 is an equidigital number, since it uses as much as digits as its factorization.

12001313213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186017971.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12001313213221 its reverse (12231231310021), we get a palindrome (24232544523242).

The spelling of 12001313213221 in words is "twelve trillion, one billion, three hundred thirteen million, two hundred thirteen thousand, two hundred twenty-one".