1244031224013 has 20 divisors (see below), whose sum is σ = 1858403509248. Its totient is φ = 829338137640.

The previous prime is 1244031224011. The next prime is 1244031224087. The reversal of 1244031224013 is 3104221304421.

1244031224013 is a `hidden beast` number, since 1 + 2 + 4 + 403 + 1 + 2 + 240 + 13 = 666.

It is not a de Polignac number, because 1244031224013 - 2¹ = 1244031224011 is a prime.

It is a super-2 number, since 2×1244031224013² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244031224011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5302708 + ... + 5532338.

Almost surely, 2^{1244031224013} is an apocalyptic number.

It is an amenable number.

1244031224013 is a deficient number, since it is larger than the sum of its proper divisors (614372285235).

1244031224013 is an equidigital number, since it uses as much as digits as its factorization.

1244031224013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296526 (or 296517 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1244031224013 its reverse (3104221304421), we get a palindrome (4348252528434).

The spelling of 1244031224013 in words is "one trillion, two hundred forty-four billion, thirty-one million, two hundred twenty-four thousand, thirteen".