21344024001 has 16 divisors (see below), whose sum is σ = 28836345600. Its totient is φ = 14040743808.

The previous prime is 21344023997. The next prime is 21344024003. The reversal of 21344024001 is 10042044312.

It is not a de Polignac number, because 21344024001 - 2² = 21344023997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21344024003) by changing a digit.

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, 378685 + ... + 431381.

It is an arithmetic number, because the mean of its divisors is an integer number (1802271600).

Almost surely, 2^21344024001 is an apocalyptic number.

It is an amenable number.

21344024001 is a deficient number, since it is larger than the sum of its proper divisors (7492321599).

21344024001 is a wasteful number, since it uses less digits than its factorization.

21344024001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54488.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21344024001 its reverse (10042044312), we get a palindrome (31386068313).

The spelling of 21344024001 in words is "twenty-one billion, three hundred forty-four million, twenty-four thousand, one".