21300012002320 has 40 divisors (see below), whose sum is σ = 52128976746240. Its totient is φ = 8071583495040.

The previous prime is 21300012002317. The next prime is 21300012002327. The reversal of 21300012002320 is 2320021000312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×21300012002320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 21300012002294 and 21300012002303.

It is not an unprimeable number, because it can be changed into a prime (21300012002327) 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, 7006581376 + ... + 7006584415.

It is an arithmetic number, because the mean of its divisors is an integer number (1303224418656).

Almost surely, 2^{21300012002320} is an apocalyptic number.

21300012002320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300012002320 is an abundant number, since it is smaller than the sum of its proper divisors (30828964743920).

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

21300012002320 is a wasteful number, since it uses less digits than its factorization.

21300012002320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013165823 (or 14013165817 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21300012002320 its reverse (2320021000312), we get a palindrome (23620033002632).

The spelling of 21300012002320 in words is "twenty-one trillion, three hundred billion, twelve million, two thousand, three hundred twenty".