12001221103013 has 4 divisors (see below), whose sum is σ = 12001228466220. Its totient is φ = 12001213739808.

The previous prime is 12001221102967. The next prime is 12001221103051. The reversal of 12001221103013 is 31030112210021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7071546740644 + 4929674362369 = 2659238^2 + 2220287^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001221103013 - 2²⁴ = 12001204325797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001221102982 and 12001221103000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001221103073) 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, 28478 + ... + 4899311.

It is an arithmetic number, because the mean of its divisors is an integer number (3000307116555).

Almost surely, 2^{12001221103013} is an apocalyptic number.

It is an amenable number.

12001221103013 is a deficient number, since it is larger than the sum of its proper divisors (7363207).

12001221103013 is an equidigital number, since it uses as much as digits as its factorization.

12001221103013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363206.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12001221103013 its reverse (31030112210021), we get a palindrome (43031333313034).

The spelling of 12001221103013 in words is "twelve trillion, one billion, two hundred twenty-one million, one hundred three thousand, thirteen".