21300210130020 has 96 divisors (see below), whose sum is σ = 63149781437568. Its totient is φ = 5345856940032.

The previous prime is 21300210130009. The next prime is 21300210130103. The reversal of 21300210130020 is 2003101200312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105451762 + ... + 105653558.

It is an arithmetic number, because the mean of its divisors is an integer number (657810223308).

Almost surely, 2^{21300210130020} is an apocalyptic number.

21300210130020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300210130020 is an abundant number, since it is smaller than the sum of its proper divisors (41849571307548).

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

21300210130020 is a wasteful number, since it uses less digits than its factorization.

21300210130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305309 (or 305307 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21300210130020 its reverse (2003101200312), we get a palindrome (23303311330332).

The spelling of 21300210130020 in words is "twenty-one trillion, three hundred billion, two hundred ten million, one hundred thirty thousand, twenty".