21300101320 has 32 divisors (see below), whose sum is σ = 48640536000. Its totient is φ = 8392874688.

The previous prime is 21300101243. The next prime is 21300101323. The reversal of 21300101320 is 2310100312.

It is a self number, because there is not a number n which added to its sum of digits gives 21300101320.

It is not an unprimeable number, because it can be changed into a prime (21300101323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3971220 + ... + 3976579.

It is an arithmetic number, because the mean of its divisors is an integer number (1520016750).

Almost surely, 2^21300101320 is an apocalyptic number.

21300101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300101320 is an abundant number, since it is smaller than the sum of its proper divisors (27340434680).

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

21300101320 is a wasteful number, since it uses less digits than its factorization.

21300101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947877 (or 7947873 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21300101320 its reverse (2310100312), we get a palindrome (23610201632).

The spelling of 21300101320 in words is "twenty-one billion, three hundred million, one hundred one thousand, three hundred twenty".