744121121321 has 16 divisors (see below), whose sum is σ = 765918332928. Its totient is φ = 722623200000.

The previous prime is 744121121269. The next prime is 744121121323. The reversal of 744121121321 is 123121121447.

It is not a de Polignac number, because 744121121321 - 2⁶ = 744121121257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744121121323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6470321 + ... + 6584321.

It is an arithmetic number, because the mean of its divisors is an integer number (47869895808).

Almost surely, 2^744121121321 is an apocalyptic number.

It is an amenable number.

744121121321 is a deficient number, since it is larger than the sum of its proper divisors (21797211607).

744121121321 is a wasteful number, since it uses less digits than its factorization.

744121121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115312.

The product of its digits is 2688, while the sum is 29.

Adding to 744121121321 its reverse (123121121447), we get a palindrome (867242242768).

The spelling of 744121121321 in words is "seven hundred forty-four billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred twenty-one".