21030300302320 has 80 divisors (see below), whose sum is σ = 49009628816928. Its totient is φ = 8392483143680.

The previous prime is 21030300302317. The next prime is 21030300302371. The reversal of 21030300302320 is 2320300303012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203224032 + ... + 203327488.

Almost surely, 2^{21030300302320} is an apocalyptic number.

21030300302320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030300302320 is an abundant number, since it is smaller than the sum of its proper divisors (27979328514608).

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

21030300302320 is a wasteful number, since it uses less digits than its factorization.

21030300302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109378 (or 109372 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21030300302320 its reverse (2320300303012), we get a palindrome (23350600605332).

The spelling of 21030300302320 in words is "twenty-one trillion, thirty billion, three hundred million, three hundred two thousand, three hundred twenty".