21002303103 has 8 divisors (see below), whose sum is σ = 28007271600. Its totient is φ = 13999435008.

The previous prime is 21002303059. The next prime is 21002303117. The reversal of 21002303103 is 30130320012.

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

It is not a de Polignac number, because 21002303103 - 2¹⁶ = 21002237567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002373103) 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, 501618 + ... + 541871.

It is an arithmetic number, because the mean of its divisors is an integer number (3500908950).

Almost surely, 2^21002303103 is an apocalyptic number.

21002303103 is a deficient number, since it is larger than the sum of its proper divisors (7004968497).

21002303103 is a wasteful number, since it uses less digits than its factorization.

21002303103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050201.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21002303103 its reverse (30130320012), we get a palindrome (51132623115).

The spelling of 21002303103 in words is "twenty-one billion, two million, three hundred three thousand, one hundred three".