21144313320113 has 8 divisors (see below), whose sum is σ = 21186912768000. Its totient is φ = 21101714777520.

The previous prime is 21144313320101. The next prime is 21144313320149. The reversal of 21144313320113 is 31102331344112.

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 21144313320113 - 2¹² = 21144313316017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21144313322113) 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, 66011123 + ... + 66330663.

It is an arithmetic number, because the mean of its divisors is an integer number (2648364096000).

Almost surely, 2^{21144313320113} is an apocalyptic number.

It is an amenable number.

21144313320113 is a deficient number, since it is larger than the sum of its proper divisors (42599447887).

21144313320113 is a wasteful number, since it uses less digits than its factorization.

21144313320113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452647.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 21144313320113 its reverse (31102331344112), we get a palindrome (52246644664225).

The spelling of 21144313320113 in words is "twenty-one trillion, one hundred forty-four billion, three hundred thirteen million, three hundred twenty thousand, one hundred thirteen".