21102303104 has 16 divisors (see below), whose sum is σ = 42039744720. Its totient is φ = 10551151488.

The previous prime is 21102303077. The next prime is 21102303113. The reversal of 21102303104 is 40130320112.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82430744 + ... + 82430999.

It is an arithmetic number, because the mean of its divisors is an integer number (2627484045).

Almost surely, 2^21102303104 is an apocalyptic number.

It is an amenable number.

21102303104 is a deficient number, since it is larger than the sum of its proper divisors (20937441616).

21102303104 is an equidigital number, since it uses as much as digits as its factorization.

21102303104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164861757 (or 164861745 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21102303104 its reverse (40130320112), we get a palindrome (61232623216).

The spelling of 21102303104 in words is "twenty-one billion, one hundred two million, three hundred three thousand, one hundred four".