21002301103 has 4 divisors (see below), whose sum is σ = 24002629840. Its totient is φ = 18001972368.

The previous prime is 21002301097. The next prime is 21002301113. The reversal of 21002301103 is 30110320012.

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 21002301103 - 2⁵ = 21002301071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002301113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500164358 + ... + 1500164371.

It is an arithmetic number, because the mean of its divisors is an integer number (6000657460).

Almost surely, 2^21002301103 is an apocalyptic number.

21002301103 is a deficient number, since it is larger than the sum of its proper divisors (3000328737).

21002301103 is an equidigital number, since it uses as much as digits as its factorization.

21002301103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000328736.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21002301103 its reverse (30110320012), we get a palindrome (51112621115).

The spelling of 21002301103 in words is "twenty-one billion, two million, three hundred one thousand, one hundred three".