| Base | Representation |
|---|---|
| bin | 10100101100011110… |
| … | …110001001111100000 |
| 3 | 2010100121220211122201 |
| 4 | 110230132301033200 |
| 5 | 331002100200000 |
| 6 | 14112551142544 |
| 7 | 1414442143051 |
| oct | 245436611740 |
| 9 | 63317824581 |
| 10 | 22221100000 |
| 11 | 9473260360 |
| 12 | 4381974a54 |
| 13 | 21318b62a8 |
| 14 | 110b296728 |
| 15 | 8a0c5496a |
| hex | 52c7b13e0 |
22221100000 has 144 divisors (see below), whose sum is σ = 59655213072. Its totient is φ = 8080000000.
The previous prime is 22221099997. The next prime is 22221100081. The reversal of 22221100000 is 112222.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a nialpdrome in base 10.
It is a zygodrome in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 22221100000.
It is a congruent number.
It is an unprimeable number.
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, 1089900 + ... + 1110100.
It is an arithmetic number, because the mean of its divisors is an integer number (414272313).
Almost surely, 222221100000 is an apocalyptic number.
22221100000 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 22221100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29827606536).
22221100000 is an abundant number, since it is smaller than the sum of its proper divisors (37434113072).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22221100000 is an equidigital number, since it uses as much as digits as its factorization.
22221100000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20247 (or 20219 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 10.
Adding to 22221100000 its reverse (112222), we get a palindrome (22221212222).
It can be divided in two parts, 22221 and 100000, that added together give a palindrome (122221).
The spelling of 22221100000 in words is "twenty-two billion, two hundred twenty-one million, one hundred thousand".
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