Base | Representation |
---|---|
bin | 10110110001001010… |
… | …00100110010111100 |
3 | 1011112212201202220120 |
4 | 23120211010302330 |
5 | 200013211012340 |
6 | 5340532414540 |
7 | 611624211114 |
oct | 133045046274 |
9 | 34485652816 |
10 | 12223532220 |
11 | 5202957749 |
12 | 2451777450 |
13 | 11ca56ac03 |
14 | 83d5a8044 |
15 | 4b81c74d0 |
hex | 2d8944cbc |
12223532220 has 48 divisors (see below), whose sum is σ = 34342751520. Its totient is φ = 3248478976.
The previous prime is 12223532207. The next prime is 12223532227. The reversal of 12223532220 is 2223532221.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12223532227) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330075 + ... + 365234.
It is an arithmetic number, because the mean of its divisors is an integer number (715473990).
Almost surely, 212223532220 is an apocalyptic number.
12223532220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12223532220 is an abundant number, since it is smaller than the sum of its proper divisors (22119219300).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12223532220 is a wasteful number, since it uses less digits than its factorization.
12223532220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 695614 (or 695612 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 24.
Subtracting from 12223532220 its reverse (2223532221), we obtain a palindrome (9999999999).
The spelling of 12223532220 in words is "twelve billion, two hundred twenty-three million, five hundred thirty-two thousand, two hundred twenty".
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