1244413211321 has 16 divisors (see below), whose sum is σ = 1444326850560. Its totient is φ = 1050162881040.

The previous prime is 1244413211311. The next prime is 1244413211341. The reversal of 1244413211321 is 1231123144421.

It is not a de Polignac number, because 1244413211321 - 2²² = 1244409017017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244413211311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5226251 + ... + 5459168.

It is an arithmetic number, because the mean of its divisors is an integer number (90270428160).

Almost surely, 2^{1244413211321} is an apocalyptic number.

It is an amenable number.

1244413211321 is a deficient number, since it is larger than the sum of its proper divisors (199913639239).

1244413211321 is a wasteful number, since it uses less digits than its factorization.

1244413211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685684.

The product of its digits is 4608, while the sum is 29.

Adding to 1244413211321 its reverse (1231123144421), we get a palindrome (2475536355742).

The spelling of 1244413211321 in words is "one trillion, two hundred forty-four billion, four hundred thirteen million, two hundred eleven thousand, three hundred twenty-one".