21110330201321 has 8 divisors (see below), whose sum is σ = 21793017187584. Its totient is φ = 20427750002160.

The previous prime is 21110330201299. The next prime is 21110330201329. The reversal of 21110330201321 is 12310203301112.

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 21110330201321 - 2³⁰ = 21109256459497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110330201293 and 21110330201302.

It is not an unprimeable number, because it can be changed into a prime (21110330201329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26294915 + ... + 27085848.

It is an arithmetic number, because the mean of its divisors is an integer number (2724127148448).

Almost surely, 2^{21110330201321} is an apocalyptic number.

It is an amenable number.

21110330201321 is a deficient number, since it is larger than the sum of its proper divisors (682686986263).

21110330201321 is a wasteful number, since it uses less digits than its factorization.

21110330201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53393551.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21110330201321 its reverse (12310203301112), we get a palindrome (33420533502433).

The spelling of 21110330201321 in words is "twenty-one trillion, one hundred ten billion, three hundred thirty million, two hundred one thousand, three hundred twenty-one".