| Base | Representation |
|---|---|
| bin | 1001101011111100110010… |
| … | …01001011010000111110000 |
| 3 | 2210102101102001221200112100 |
| 4 | 10311332121021122013300 |
| 5 | 10243000041410414300 |
| 6 | 113145404314500400 |
| 7 | 4325653242151623 |
| oct | 465763111320760 |
| 9 | 83371361850470 |
| 10 | 21301312201200 |
| 11 | 6872921460429 |
| 12 | 2480406434700 |
| 13 | bb69221c8895 |
| 14 | 538dbbbc1dba |
| 15 | 26e1690ab700 |
| hex | 135f9925a1f0 |
21301312201200 has 720 divisors, whose sum is σ = 78775035262560. Its totient is φ = 5315051520000.
The previous prime is 21301312201199. The next prime is 21301312201229. The reversal of 21301312201200 is 210221310312.
21301312201200 is a `hidden beast` number, since 2 + 130 + 1 + 312 + 20 + 1 + 200 = 666.
It is a tau number, because it is divible by the number of its divisors (720).
It is a Harshad number since it is a multiple of its sum of digits (18).
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 143 ways as a sum of consecutive naturals, for example, 2991333640 + ... + 2991340760.
It is an arithmetic number, because the mean of its divisors is an integer number (109409771198).
Almost surely, 221301312201200 is an apocalyptic number.
21301312201200 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 21301312201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39387517631280).
21301312201200 is an abundant number, since it is smaller than the sum of its proper divisors (57473723061360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21301312201200 is a wasteful number, since it uses less digits than its factorization.
21301312201200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7698 (or 7684 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 21301312201200 its reverse (210221310312), we get a palindrome (21511533511512).
The spelling of 21301312201200 in words is "twenty-one trillion, three hundred one billion, three hundred twelve million, two hundred one thousand, two hundred".
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