| Base | Representation |
|---|---|
| bin | 100001000111011… |
| … | …1110001110000000 |
| 3 | 2212102221212210210 |
| 4 | 1002032332032000 |
| 5 | 4233433033440 |
| 6 | 302133154120 |
| 7 | 36352136502 |
| oct | 10216761600 |
| 9 | 2772855723 |
| 10 | 1111221120 |
| 11 | 520289969 |
| 12 | 27018b940 |
| 13 | 1492ac2b9 |
| 14 | a781dd72 |
| 15 | 67850a80 |
| hex | 423be380 |
1111221120 has 128 divisors (see below), whose sum is σ = 3552660000. Its totient is φ = 295436288.
The previous prime is 1111221119. The next prime is 1111221157. The reversal of 1111221120 is 211221111.
It is a tau number, because it is divible by the number of its divisors (128).
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 1111221096 and 1111221105.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861436 + ... + 862724.
Almost surely, 21111221120 is an apocalyptic number.
1111221120 is a gapful number since it is divisible by the number (10) 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 1111221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1776330000).
1111221120 is an abundant number, since it is smaller than the sum of its proper divisors (2441438880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1111221120 is a wasteful number, since it uses less digits than its factorization.
1111221120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1760 (or 1748 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 12.
The square root of 1111221120 is about 33334.9834258246. The cubic root of 1111221120 is about 1035.7783498428.
Adding to 1111221120 its reverse (211221111), we get a palindrome (1322442231).
Subtracting from 1111221120 its reverse (211221111), we obtain a palindrome (900000009).
The spelling of 1111221120 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twenty".
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