Base | Representation |
---|---|
bin | 10100101011110100… |
… | …110110011011110101 |
3 | 2010022212020112212220 |
4 | 110223310312123311 |
5 | 330441242024341 |
6 | 14111515432553 |
7 | 1414246554564 |
oct | 245364663365 |
9 | 63285215786 |
10 | 22210111221 |
11 | 9468035321 |
12 | 437a155759 |
13 | 212c53965c |
14 | 1109a35bdb |
15 | 89ecd3a66 |
hex | 52bd366f5 |
22210111221 has 8 divisors (see below), whose sum is σ = 29649206880. Its totient is φ = 14788878192.
The previous prime is 22210111181. The next prime is 22210111229. The reversal of 22210111221 is 12211101222.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 22210111221 - 215 = 22210078453 is a prime.
It is a super-2 number, since 2×222101112212 (a number of 21 digits) contains 22 as substring.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 22210111221.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22210111229) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4462755 + ... + 4467728.
It is an arithmetic number, because the mean of its divisors is an integer number (3706150860).
Almost surely, 222210111221 is an apocalyptic number.
It is an amenable number.
22210111221 is a deficient number, since it is larger than the sum of its proper divisors (7439095659).
22210111221 is an equidigital number, since it uses as much as digits as its factorization.
22210111221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8931315.
The product of its (nonzero) digits is 32, while the sum is 15.
Adding to 22210111221 its reverse (12211101222), we get a palindrome (34421212443).
Subtracting from 22210111221 its reverse (12211101222), we obtain a palindrome (9999009999).
The spelling of 22210111221 in words is "twenty-two billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-one".
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