21300221120 has 56 divisors (see below), whose sum is σ = 50984103264. Its totient is φ = 8475918336.

The previous prime is 21300221101. The next prime is 21300221141. The reversal of 21300221120 is 2112200312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21300221095 and 21300221104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110684 + ... + 234203.

Almost surely, 2^21300221120 is an apocalyptic number.

21300221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300221120 is an abundant number, since it is smaller than the sum of its proper divisors (29683882144).

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

21300221120 is a wasteful number, since it uses less digits than its factorization.

21300221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345097 (or 345087 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21300221120 its reverse (2112200312), we get a palindrome (23412421432).

The spelling of 21300221120 in words is "twenty-one billion, three hundred million, two hundred twenty-one thousand, one hundred twenty".