21300110120 has 64 divisors (see below), whose sum is σ = 48503577600. Its totient is φ = 8417390080.

The previous prime is 21300110119. The next prime is 21300110123. The reversal of 21300110120 is 2101100312.

It is a super-2 number, since 2×21300110120² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21300110123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7855565 + ... + 7858275.

It is an arithmetic number, because the mean of its divisors is an integer number (757868400).

Almost surely, 2^21300110120 is an apocalyptic number.

21300110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21300110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24251788800).

21300110120 is an abundant number, since it is smaller than the sum of its proper divisors (27203467480).

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

21300110120 is a wasteful number, since it uses less digits than its factorization.

21300110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018 (or 5014 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21300110120 its reverse (2101100312), we get a palindrome (23401210432).

The spelling of 21300110120 in words is "twenty-one billion, three hundred million, one hundred ten thousand, one hundred twenty".