21344424244 has 48 divisors (see below), whose sum is σ = 44152355520. Its totient is φ = 8900720640.

The previous prime is 21344424217. The next prime is 21344424259. The reversal of 21344424244 is 44242444312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21229 + ... + 207700.

It is an arithmetic number, because the mean of its divisors is an integer number (919840740).

Almost surely, 2^21344424244 is an apocalyptic number.

It is an amenable number.

21344424244 is an abundant number, since it is smaller than the sum of its proper divisors (22807931276).

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

21344424244 is a wasteful number, since it uses less digits than its factorization.

21344424244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229120 (or 229118 counting only the distinct ones).

The product of its digits is 98304, while the sum is 34.

Adding to 21344424244 its reverse (44242444312), we get a palindrome (65586868556).

The spelling of 21344424244 in words is "twenty-one billion, three hundred forty-four million, four hundred twenty-four thousand, two hundred forty-four".