21310110300 has 72 divisors (see below), whose sum is σ = 65284165296. Its totient is φ = 5348418560.

The previous prime is 21310110293. The next prime is 21310110313. The reversal of 21310110300 is 301101312.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2084127 + ... + 2094326.

It is an arithmetic number, because the mean of its divisors is an integer number (906724518).

Almost surely, 2^21310110300 is an apocalyptic number.

21310110300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310110300 is an abundant number, since it is smaller than the sum of its proper divisors (43974054996).

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

21310110300 is a wasteful number, since it uses less digits than its factorization.

21310110300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178487 (or 4178480 counting only the distinct ones).

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

Adding to 21310110300 its reverse (301101312), we get a palindrome (21611211612).

The spelling of 21310110300 in words is "twenty-one billion, three hundred ten million, one hundred ten thousand, three hundred".