21103202100300 has 144 divisors (see below), whose sum is σ = 64135265413632. Its totient is φ = 5347197504000.

The previous prime is 21103202100187. The next prime is 21103202100301. The reversal of 21103202100300 is 300120230112.

It is a super-2 number, since 2×21103202100300² (a number of 27 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21103202100300.

It is not an unprimeable number, because it can be changed into a prime (21103202100301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9085369 + ... + 11169168.

Almost surely, 2^{21103202100300} is an apocalyptic number.

21103202100300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103202100300 is an abundant number, since it is smaller than the sum of its proper divisors (43032063313332).

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

21103202100300 is a wasteful number, since it uses less digits than its factorization.

21103202100300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20254728 (or 20254721 counting only the distinct ones).

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

Adding to 21103202100300 its reverse (300120230112), we get a palindrome (21403322330412).

The spelling of 21103202100300 in words is "twenty-one trillion, one hundred three billion, two hundred two million, one hundred thousand, three hundred".