21344122324 has 48 divisors (see below), whose sum is σ = 43129461760. Its totient is φ = 9053130240.

The previous prime is 21344122313. The next prime is 21344122379. The reversal of 21344122324 is 42322144312.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 21344122292 and 21344122301.

It is a congruent number.

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, 3021004 + ... + 3028060.

Almost surely, 2^21344122324 is an apocalyptic number.

It is an amenable number.

21344122324 is an abundant number, since it is smaller than the sum of its proper divisors (21785339436).

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

21344122324 is a wasteful number, since it uses less digits than its factorization.

21344122324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8168 (or 8166 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 21344122324 its reverse (42322144312), we get a palindrome (63666266636).

The spelling of 21344122324 in words is "twenty-one billion, three hundred forty-four million, one hundred twenty-two thousand, three hundred twenty-four".