21411115341143 has 16 divisors (see below), whose sum is σ = 23630816720160. Its totient is φ = 19238194214400.

The previous prime is 21411115341097. The next prime is 21411115341149. The reversal of 21411115341143 is 34114351111412.

It is a cyclic number.

It is not a de Polignac number, because 21411115341143 - 2³⁶ = 21342395864407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411115341149) 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, 30676238 + ... + 31366443.

It is an arithmetic number, because the mean of its divisors is an integer number (1476926045010).

Almost surely, 2^{21411115341143} is an apocalyptic number.

21411115341143 is a deficient number, since it is larger than the sum of its proper divisors (2219701379017).

21411115341143 is a wasteful number, since it uses less digits than its factorization.

21411115341143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62043058.

The product of its digits is 5760, while the sum is 32.

Adding to 21411115341143 its reverse (34114351111412), we get a palindrome (55525466452555).

The spelling of 21411115341143 in words is "twenty-one trillion, four hundred eleven billion, one hundred fifteen million, three hundred forty-one thousand, one hundred forty-three".