| Base | Representation |
|---|---|
| bin | 1001101100001100111110… |
| … | …00110010111000010000000 |
| 3 | 2210110012211200100012111100 |
| 4 | 10312012133012113002000 |
| 5 | 10243120341003000000 |
| 6 | 113153402455214400 |
| 7 | 4326411500215200 |
| oct | 466063706270200 |
| 9 | 83405750305440 |
| 10 | 21310002000000 |
| 11 | 687658063a92a |
| 12 | 2482030677400 |
| 13 | bb76a8618a6c |
| 14 | 5395a3d2a400 |
| 15 | 26e4c6e11a00 |
| hex | 13619f197080 |
21310002000000 has 2016 divisors, whose sum is σ = 91715811569460. Its totient is φ = 4731955200000.
The previous prime is 21310001999947. The next prime is 21310002000013. The reversal of 21310002000000 is 20001312.
It is a happy number.
It can be written as a sum of positive squares in 14 ways, for example, as 17340694894656 + 3969307105344 = 4164216^2 + 1992312^2 .
It is a tau number, because it is divible by the number of its divisors (2016).
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 251 ways as a sum of consecutive naturals, for example, 32633999674 + ... + 32634000326.
Almost surely, 221310002000000 is an apocalyptic number.
21310002000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21310002000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45857905784730).
21310002000000 is an abundant number, since it is smaller than the sum of its proper divisors (70405809569460).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21310002000000 is an frugal number, since it uses more digits than its factorization.
21310002000000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 754 (or 707 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 9.
Adding to 21310002000000 its reverse (20001312), we get a palindrome (21310022001312).
The spelling of 21310002000000 in words is "twenty-one trillion, three hundred ten billion, two million", and thus it is an aban number.
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