12444021212013 has 8 divisors (see below), whose sum is σ = 18435586980800. Its totient is φ = 8296014141324.

The previous prime is 12444021211997. The next prime is 12444021212041. The reversal of 12444021212013 is 31021212044421.

12444021212013 is a `hidden beast` number, since 1 + 2 + 4 + 440 + 2 + 1 + 212 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 12444021212013 - 2⁴ = 12444021211997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 460889674519 = 12444021212013 / (1 + 2 + 4 + 4 + 4 + 0 + 2 + 1 + 2 + 1 + 2 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444021212053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230444837233 + ... + 230444837286.

It is an arithmetic number, because the mean of its divisors is an integer number (2304448372600).

Almost surely, 2^{12444021212013} is an apocalyptic number.

It is an amenable number.

12444021212013 is a deficient number, since it is larger than the sum of its proper divisors (5991565768787).

12444021212013 is an equidigital number, since it uses as much as digits as its factorization.

12444021212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460889674528 (or 460889674522 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 12444021212013 its reverse (31021212044421), we get a palindrome (43465233256434).

The spelling of 12444021212013 in words is "twelve trillion, four hundred forty-four billion, twenty-one million, two hundred twelve thousand, thirteen".