12012220321013 has 4 divisors (see below), whose sum is σ = 13104240350208. Its totient is φ = 10920200291820.

The previous prime is 12012220320977. The next prime is 12012220321033. The reversal of 12012220321013 is 31012302221021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12012220321013 - 2¹⁰ = 12012220319989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012220321033) 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 3 ways as a sum of consecutive naturals, for example, 546010014581 + ... + 546010014602.

It is an arithmetic number, because the mean of its divisors is an integer number (3276060087552).

Almost surely, 2^{12012220321013} is an apocalyptic number.

It is an amenable number.

12012220321013 is a deficient number, since it is larger than the sum of its proper divisors (1092020029195).

12012220321013 is a wasteful number, since it uses less digits than its factorization.

12012220321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092020029194.

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

Adding to 12012220321013 its reverse (31012302221021), we get a palindrome (43024522542034).

The spelling of 12012220321013 in words is "twelve trillion, twelve billion, two hundred twenty million, three hundred twenty-one thousand, thirteen".