21444313241 has 8 divisors (see below), whose sum is σ = 23097138624. Its totient is φ = 19791954000.

The previous prime is 21444313193. The next prime is 21444313337. The reversal of 21444313241 is 14231344412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21444313241 - 2²² = 21440118937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21444313441) 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 7 ways as a sum of consecutive naturals, for example, 17885 + ... + 207866.

It is an arithmetic number, because the mean of its divisors is an integer number (2887142328).

Almost surely, 2^21444313241 is an apocalyptic number.

It is an amenable number.

21444313241 is a deficient number, since it is larger than the sum of its proper divisors (1652825383).

21444313241 is a wasteful number, since it uses less digits than its factorization.

21444313241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233071.

The product of its digits is 9216, while the sum is 29.

Adding to 21444313241 its reverse (14231344412), we get a palindrome (35675657653).

The spelling of 21444313241 in words is "twenty-one billion, four hundred forty-four million, three hundred thirteen thousand, two hundred forty-one".