21443540341241 has 8 divisors (see below), whose sum is σ = 21488384549184. Its totient is φ = 21398700894480.

The previous prime is 21443540341231. The next prime is 21443540341247. The reversal of 21443540341241 is 14214304534412.

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

It is a cyclic number.

It is not a de Polignac number, because 21443540341241 - 2¹⁸ = 21443540079097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21443540341195 and 21443540341204.

It is not an unprimeable number, because it can be changed into a prime (21443540341247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7899260 + ... + 10260866.

It is an arithmetic number, because the mean of its divisors is an integer number (2686048068648).

Almost surely, 2^{21443540341241} is an apocalyptic number.

It is an amenable number.

21443540341241 is a deficient number, since it is larger than the sum of its proper divisors (44844207943).

21443540341241 is a wasteful number, since it uses less digits than its factorization.

21443540341241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380591.

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 21443540341241 its reverse (14214304534412), we get a palindrome (35657844875653).

The spelling of 21443540341241 in words is "twenty-one trillion, four hundred forty-three billion, five hundred forty million, three hundred forty-one thousand, two hundred forty-one".