21424241422305 has 24 divisors (see below), whose sum is σ = 37143090316800. Its totient is φ = 11423881009440.

The previous prime is 21424241422271. The next prime is 21424241422321. The reversal of 21424241422305 is 50322414242412.

21424241422305 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 4 + 2 + 414 + 2 + 230 + 5 = 666.

It is not a de Polignac number, because 21424241422305 - 2⁸ = 21424241422049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21424241422305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49387531 + ... + 49819440.

It is an arithmetic number, because the mean of its divisors is an integer number (1547628763200).

Almost surely, 2^{21424241422305} is an apocalyptic number.

It is an amenable number.

21424241422305 is a deficient number, since it is larger than the sum of its proper divisors (15718848894495).

21424241422305 is a wasteful number, since it uses less digits than its factorization.

21424241422305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99211781 (or 99211778 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

Adding to 21424241422305 its reverse (50322414242412), we get a palindrome (71746655664717).

The spelling of 21424241422305 in words is "twenty-one trillion, four hundred twenty-four billion, two hundred forty-one million, four hundred twenty-two thousand, three hundred five".