21440550001105 has 16 divisors (see below), whose sum is σ = 26847423717120. Its totient is φ = 16406604541888.

The previous prime is 21440550001069. The next prime is 21440550001147. The reversal of 21440550001105 is 50110005504412.

It is not a de Polignac number, because 21440550001105 - 2³³ = 21431960066513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41311044 + ... + 41826826.

It is an arithmetic number, because the mean of its divisors is an integer number (1677963982320).

Almost surely, 2^{21440550001105} is an apocalyptic number.

It is an amenable number.

21440550001105 is a deficient number, since it is larger than the sum of its proper divisors (5406873716015).

21440550001105 is a wasteful number, since it uses less digits than its factorization.

21440550001105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877280.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 21440550001105 its reverse (50110005504412), we get a palindrome (71550555505517).

The spelling of 21440550001105 in words is "twenty-one trillion, four hundred forty billion, five hundred fifty million, one thousand, one hundred five".