21344242116 has 24 divisors (see below), whose sum is σ = 52424454880. Its totient is φ = 6740286912.

The previous prime is 21344242093. The next prime is 21344242123. The reversal of 21344242116 is 61124244312.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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, 46807321 + ... + 46807776.

Almost surely, 2^21344242116 is an apocalyptic number.

It is an amenable number.

21344242116 is an abundant number, since it is smaller than the sum of its proper divisors (31080212764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21344242116 is a wasteful number, since it uses less digits than its factorization.

21344242116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93615123 (or 93615121 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 21344242116 its reverse (61124244312), we get a palindrome (82468486428).

The spelling of 21344242116 in words is "twenty-one billion, three hundred forty-four million, two hundred forty-two thousand, one hundred sixteen".