12000312231221 has 8 divisors (see below), whose sum is σ = 12080995678944. Its totient is φ = 11919682560240.

The previous prime is 12000312231197. The next prime is 12000312231233. The reversal of 12000312231221 is 12213221300021.

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 12000312231221 - 2¹⁰ = 12000312230197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000312231193 and 12000312231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000312236221) 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, 12996335 + ... + 13889036.

It is an arithmetic number, because the mean of its divisors is an integer number (1510124459868).

Almost surely, 2^{12000312231221} is an apocalyptic number.

It is an amenable number.

12000312231221 is a deficient number, since it is larger than the sum of its proper divisors (80683447723).

12000312231221 is a wasteful number, since it uses less digits than its factorization.

12000312231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26888371.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12000312231221 its reverse (12213221300021), we get a palindrome (24213533531242).

The spelling of 12000312231221 in words is "twelve trillion, three hundred twelve million, two hundred thirty-one thousand, two hundred twenty-one".