21020313032300 has 72 divisors (see below), whose sum is σ = 48298155751440. Its totient is φ = 7913382912000.

The previous prime is 21020313032291. The next prime is 21020313032339. The reversal of 21020313032300 is 323031302012.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147575516 + ... + 147717884.

It is an arithmetic number, because the mean of its divisors is an integer number (670807718770).

Almost surely, 2^{21020313032300} is an apocalyptic number.

21020313032300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020313032300 is an abundant number, since it is smaller than the sum of its proper divisors (27277842719140).

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

21020313032300 is a wasteful number, since it uses less digits than its factorization.

21020313032300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229251 (or 229244 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21020313032300 its reverse (323031302012), we get a palindrome (21343344334312).

The spelling of 21020313032300 in words is "twenty-one trillion, twenty billion, three hundred thirteen million, thirty-two thousand, three hundred".