21344042312324 has 12 divisors (see below), whose sum is σ = 37387681369500. Its totient is φ = 10661847635328.

The previous prime is 21344042312303. The next prime is 21344042312447. The reversal of 21344042312324 is 42321324044312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20465852166400 + 878190145924 = 4523920^2 + 937118^2 .

It is a super-3 number, since 3×21344042312324³ (a number of 41 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2543375489 + ... + 2543383880.

It is an arithmetic number, because the mean of its divisors is an integer number (3115640114125).

Almost surely, 2^{21344042312324} is an apocalyptic number.

It is an amenable number.

21344042312324 is a deficient number, since it is larger than the sum of its proper divisors (16043639057176).

21344042312324 is a wasteful number, since it uses less digits than its factorization.

21344042312324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086760422 (or 5086760420 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 21344042312324 its reverse (42321324044312), we get a palindrome (63665366356636).

The spelling of 21344042312324 in words is "twenty-one trillion, three hundred forty-four billion, forty-two million, three hundred twelve thousand, three hundred twenty-four".