21001303110 has 32 divisors (see below), whose sum is σ = 51257422080. Its totient is φ = 5505425888.

The previous prime is 21001303091. The next prime is 21001303123. The reversal of 21001303110 is 1130310012.

21001303110 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 5930802 + ... + 5934341.

It is an arithmetic number, because the mean of its divisors is an integer number (1601794440).

Almost surely, 2^21001303110 is an apocalyptic number.

21001303110 is an abundant number, since it is smaller than the sum of its proper divisors (30256118970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21001303110 is a wasteful number, since it uses less digits than its factorization.

21001303110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11865212.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21001303110 its reverse (1130310012), we get a palindrome (22131613122).

The spelling of 21001303110 in words is "twenty-one billion, one million, three hundred three thousand, one hundred ten".