21020101230300 has 144 divisors (see below), whose sum is σ = 61510095601920. Its totient is φ = 5541605020160.

The previous prime is 21020101230241. The next prime is 21020101230347. The reversal of 21020101230300 is 303210102012.

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 21020101230300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205618999 + ... + 205721201.

It is an arithmetic number, because the mean of its divisors is an integer number (427153441680).

Almost surely, 2^{21020101230300} is an apocalyptic number.

21020101230300 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 21020101230300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30755047800960).

21020101230300 is an abundant number, since it is smaller than the sum of its proper divisors (40489994371620).

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

21020101230300 is a wasteful number, since it uses less digits than its factorization.

21020101230300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110012 (or 110005 counting only the distinct ones).

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

Adding to 21020101230300 its reverse (303210102012), we get a palindrome (21323311332312).

The spelling of 21020101230300 in words is "twenty-one trillion, twenty billion, one hundred one million, two hundred thirty thousand, three hundred".