300021302120 has 128 divisors (see below), whose sum is σ = 742594314240. Its totient is φ = 108723774720.

The previous prime is 300021302101. The next prime is 300021302197. The reversal of 300021302120 is 21203120003.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 300021302095 and 300021302104.

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 31 ways as a sum of consecutive naturals, for example, 1228529 + ... + 1452351.

It is an arithmetic number, because the mean of its divisors is an integer number (5801518080).

Almost surely, 2^300021302120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 300021302120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371297157120).

300021302120 is an abundant number, since it is smaller than the sum of its proper divisors (442573012120).

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

300021302120 is a wasteful number, since it uses less digits than its factorization.

300021302120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223935 (or 223931 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 300021302120 its reverse (21203120003), we get a palindrome (321224422123).

The spelling of 300021302120 in words is "three hundred billion, twenty-one million, three hundred two thousand, one hundred twenty".