21021320320300 has 36 divisors (see below), whose sum is σ = 45656885343496. Its totient is φ = 8401040524800.

The previous prime is 21021320320289. The next prime is 21021320320313. The reversal of 21021320320300 is 302302312012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93482181 + ... + 93706780.

Almost surely, 2^{21021320320300} is an apocalyptic number.

21021320320300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21021320320300 is an abundant number, since it is smaller than the sum of its proper divisors (24635565023196).

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

21021320320300 is a wasteful number, since it uses less digits than its factorization.

21021320320300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187190098 (or 187190091 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21021320320300 its reverse (302302312012), we get a palindrome (21323622632312).

The spelling of 21021320320300 in words is "twenty-one trillion, twenty-one billion, three hundred twenty million, three hundred twenty thousand, three hundred".