21010120200300 has 288 divisors, whose sum is σ = 76000375664640. Its totient is φ = 4353576710400.

The previous prime is 21010120200283. The next prime is 21010120200343. The reversal of 21010120200300 is 300202101012.

It is a super-2 number, since 2×21010120200300² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7026147 + ... + 9559653.

It is an arithmetic number, because the mean of its divisors is an integer number (263890193280).

Almost surely, 2^{21010120200300} is an apocalyptic number.

21010120200300 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 21010120200300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38000187832320).

21010120200300 is an abundant number, since it is smaller than the sum of its proper divisors (54990255464340).

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

21010120200300 is a wasteful number, since it uses less digits than its factorization.

21010120200300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533901 (or 2533894 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21010120200300 its reverse (300202101012), we get a palindrome (21310322301312).

The spelling of 21010120200300 in words is "twenty-one trillion, ten billion, one hundred twenty million, two hundred thousand, three hundred".