21344240224013 has 8 divisors (see below), whose sum is σ = 25828324304832. Its totient is φ = 17218882869696.

The previous prime is 21344240224001. The next prime is 21344240224127. The reversal of 21344240224013 is 31042204244312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21344240224013 - 2⁴² = 16946193712909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344240224513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89681681495 + ... + 89681681732.

It is an arithmetic number, because the mean of its divisors is an integer number (3228540538104).

Almost surely, 2^{21344240224013} is an apocalyptic number.

It is an amenable number.

21344240224013 is a deficient number, since it is larger than the sum of its proper divisors (4484084080819).

21344240224013 is a wasteful number, since it uses less digits than its factorization.

21344240224013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179363363251.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 21344240224013 its reverse (31042204244312), we get a palindrome (52386444468325).

The spelling of 21344240224013 in words is "twenty-one trillion, three hundred forty-four billion, two hundred forty million, two hundred twenty-four thousand, thirteen".