21330301103 has 4 divisors (see below), whose sum is σ = 21365442240. Its totient is φ = 21295159968.

The previous prime is 21330301033. The next prime is 21330301133. The reversal of 21330301103 is 30110303312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21330301103 - 2¹⁶ = 21330235567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330301133) 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 3 ways as a sum of consecutive naturals, for example, 17569658 + ... + 17570871.

It is an arithmetic number, because the mean of its divisors is an integer number (5341360560).

Almost surely, 2^21330301103 is an apocalyptic number.

21330301103 is a deficient number, since it is larger than the sum of its proper divisors (35141137).

21330301103 is an equidigital number, since it uses as much as digits as its factorization.

21330301103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35141136.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21330301103 its reverse (30110303312), we get a palindrome (51440604415).

The spelling of 21330301103 in words is "twenty-one billion, three hundred thirty million, three hundred one thousand, one hundred three".