21030303320300 has 144 divisors (see below), whose sum is σ = 49885422628608. Its totient is φ = 7660897075200.

The previous prime is 21030303320293. The next prime is 21030303320303. The reversal of 21030303320300 is 302330303012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (21030303320303) 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, 494146622 + ... + 494189178.

It is an arithmetic number, because the mean of its divisors is an integer number (346426546032).

Almost surely, 2^{21030303320300} is an apocalyptic number.

21030303320300 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 21030303320300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24942711314304).

21030303320300 is an abundant number, since it is smaller than the sum of its proper divisors (28855119308308).

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

21030303320300 is a wasteful number, since it uses less digits than its factorization.

21030303320300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51996 (or 51989 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 21030303320300 its reverse (302330303012), we get a palindrome (21332633623312).

The spelling of 21030303320300 in words is "twenty-one trillion, thirty billion, three hundred three million, three hundred twenty thousand, three hundred".