21300321112220 has 96 divisors (see below), whose sum is σ = 45333753755136. Its totient is φ = 8406221472000.

The previous prime is 21300321112159. The next prime is 21300321112261. The reversal of 21300321112220 is 2221112300312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21300321112192 and 21300321112201.

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 31 ways as a sum of consecutive naturals, for example, 262340030 + ... + 262421210.

It is an arithmetic number, because the mean of its divisors is an integer number (472226601616).

Almost surely, 2^{21300321112220} is an apocalyptic number.

21300321112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300321112220 is an abundant number, since it is smaller than the sum of its proper divisors (24033432642916).

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

21300321112220 is a wasteful number, since it uses less digits than its factorization.

21300321112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81931 (or 81929 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21300321112220 its reverse (2221112300312), we get a palindrome (23521433412532).

The spelling of 21300321112220 in words is "twenty-one trillion, three hundred billion, three hundred twenty-one million, one hundred twelve thousand, two hundred twenty".