| Base | Representation |
|---|---|
| bin | 10100111001110010… |
| … | …11000010110001100 |
| 3 | 1001222002120221211000 |
| 4 | 22130321120112030 |
| 5 | 140440342102340 |
| 6 | 5053323100300 |
| 7 | 545045213016 |
| oct | 123471302614 |
| 9 | 31862527730 |
| 10 | 11222222220 |
| 11 | 4839719720 |
| 12 | 2212371690 |
| 13 | 109ac926a1 |
| 14 | 7865d91b6 |
| 15 | 45a337d30 |
| hex | 29ce5858c |
11222222220 has 192 divisors, whose sum is σ = 39401510400. Its totient is φ = 2626686720.
The previous prime is 11222222161. The next prime is 11222222227. The reversal of 11222222220 is 2222222211.
11222222220 is a `hidden beast` number, since 1 + 1 + 222 + 222 + 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 = 11222222193 and 11222222202.
It is not an unprimeable number, because it can be changed into a prime (11222222227) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139687 + ... + 204833.
It is an arithmetic number, because the mean of its divisors is an integer number (205216200).
Almost surely, 211222222220 is an apocalyptic number.
11222222220 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 11222222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19700755200).
11222222220 is an abundant number, since it is smaller than the sum of its proper divisors (28179288180).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11222222220 is a wasteful number, since it uses less digits than its factorization.
11222222220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 65205 (or 65197 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 18.
Adding to 11222222220 its reverse (2222222211), we get a palindrome (13444444431).
Subtracting from 11222222220 its reverse (2222222211), we obtain a palindrome (9000000009).
It can be divided in two parts, 1 and 1222222220, that added together give a palindrome (1222222221).
The spelling of 11222222220 in words is "eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".
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