| Base | Representation |
|---|---|
| bin | 10100100110100001… |
| … | …010011101111110000 |
| 3 | 2010002122202102121221 |
| 4 | 110212201103233300 |
| 5 | 330301000233240 |
| 6 | 14055015554424 |
| 7 | 1412116160452 |
| oct | 244641235760 |
| 9 | 63078672557 |
| 10 | 22121102320 |
| 11 | 9421870649 |
| 12 | 435438ba14 |
| 13 | 2116c73875 |
| 14 | 10dbca62d2 |
| 15 | 8970a0a4a |
| hex | 526853bf0 |
22121102320 has 80 divisors (see below), whose sum is σ = 52697921760. Its totient is φ = 8631124992.
The previous prime is 22121102303. The next prime is 22121102323. The reversal of 22121102320 is 2320112122.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (16).
It is a junction number, because it is equal to n+sod(n) for n = 22121102294 and 22121102303.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22121102323) 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 15 ways as a sum of consecutive naturals, for example, 2847882 + ... + 2855638.
It is an arithmetic number, because the mean of its divisors is an integer number (658724022).
Almost surely, 222121102320 is an apocalyptic number.
22121102320 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 22121102320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26348960880).
22121102320 is an abundant number, since it is smaller than the sum of its proper divisors (30576819440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22121102320 is a wasteful number, since it uses less digits than its factorization.
22121102320 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8642 (or 8636 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 16.
Adding to 22121102320 its reverse (2320112122), we get a palindrome (24441214442).
The spelling of 22121102320 in words is "twenty-two billion, one hundred twenty-one million, one hundred two thousand, three hundred twenty".
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