| Base | Representation |
|---|---|
| bin | 1001100110101011010001… |
| … | …01110110101011001001100 |
| 3 | 2202210001200212111021120200 |
| 4 | 10303111220232311121030 |
| 5 | 10232012441443132340 |
| 6 | 112530240054413500 |
| 7 | 4306610022010410 |
| oct | 463255056653114 |
| 9 | 82701625437520 |
| 10 | 21120111302220 |
| 11 | 6802a97259057 |
| 12 | 2451276661290 |
| 13 | ba2805836928 |
| 14 | 53030c700d40 |
| 15 | 2695b123b330 |
| hex | 133568bb564c |
21120111302220 has 576 divisors, whose sum is σ = 78780241612800. Its totient is φ = 4472058470400.
The previous prime is 21120111302189. The next prime is 21120111302263. The reversal of 21120111302220 is 2220311102112.
21120111302220 is a `hidden beast` number, since 2 + 11 + 20 + 111 + 302 + 220 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 21120111302193 and 21120111302202.
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 191 ways as a sum of consecutive naturals, for example, 1351333366 + ... + 1351348994.
It is an arithmetic number, because the mean of its divisors is an integer number (136771252800).
Almost surely, 221120111302220 is an apocalyptic number.
21120111302220 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 21120111302220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39390120806400).
21120111302220 is an abundant number, since it is smaller than the sum of its proper divisors (57660130310580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21120111302220 is a wasteful number, since it uses less digits than its factorization.
21120111302220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16918 (or 16913 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 18.
Adding to 21120111302220 its reverse (2220311102112), we get a palindrome (23340422404332).
The spelling of 21120111302220 in words is "twenty-one trillion, one hundred twenty billion, one hundred eleven million, three hundred two thousand, two hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •