21103030003321 has 8 divisors (see below), whose sum is σ = 24147560384640. Its totient is φ = 18065952574368.

The previous prime is 21103030003247. The next prime is 21103030003327. The reversal of 21103030003321 is 12330003030112.

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 21103030003321 - 2⁷ = 21103030003193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21103030003327) 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, 1863232021 + ... + 1863243346.

It is an arithmetic number, because the mean of its divisors is an integer number (3018445048080).

Almost surely, 2^{21103030003321} is an apocalyptic number.

It is an amenable number.

21103030003321 is a deficient number, since it is larger than the sum of its proper divisors (3044530381319).

21103030003321 is an equidigital number, since it uses as much as digits as its factorization.

21103030003321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726476183.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21103030003321 its reverse (12330003030112), we get a palindrome (33433033033433).

The spelling of 21103030003321 in words is "twenty-one trillion, one hundred three billion, thirty million, three thousand, three hundred twenty-one".