| Base | Representation |
|---|---|
| bin | 10110110000110110… |
| … | …11101010110000100 |
| 3 | 1011112200222200220100 |
| 4 | 23120123131112010 |
| 5 | 200012034330312 |
| 6 | 5340402404100 |
| 7 | 611563611435 |
| oct | 133033352604 |
| 9 | 34480880810 |
| 10 | 12221011332 |
| 11 | 5201495772 |
| 12 | 2450960630 |
| 13 | 11c9b9766a |
| 14 | 83d10d48c |
| 15 | 4b7d7a5dc |
| hex | 2d86dd584 |
12221011332 has 72 divisors (see below), whose sum is σ = 32073350400. Its totient is φ = 3919412160.
The previous prime is 12221011303. The next prime is 12221011339. The reversal of 12221011332 is 23311012221.
12221011332 is a `hidden beast` number, since 122 + 210 + 1 + 1 + 332 = 666.
12221011332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (12221011339) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161419 + ... + 224717.
It is an arithmetic number, because the mean of its divisors is an integer number (445463200).
Almost surely, 212221011332 is an apocalyptic number.
12221011332 is a gapful number since it is divisible by the number (12) 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 12221011332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16036675200).
12221011332 is an abundant number, since it is smaller than the sum of its proper divisors (19852339068).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12221011332 is a wasteful number, since it uses less digits than its factorization.
12221011332 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 63513 (or 63508 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 12221011332 its reverse (23311012221), we get a palindrome (35532023553).
The spelling of 12221011332 in words is "twelve billion, two hundred twenty-one million, eleven thousand, three hundred thirty-two".
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