Base | Representation |
---|---|
bin | 10100101101000001… |
… | …001011101100000101 |
3 | 2010101020220011110000 |
4 | 110231001023230011 |
5 | 331011402334341 |
6 | 14113512351513 |
7 | 1414611625020 |
oct | 245501135405 |
9 | 63336804400 |
10 | 22230121221 |
11 | 9478362110 |
12 | 43849a5599 |
13 | 21337244a9 |
14 | 110c5641b7 |
15 | 8a19378b6 |
hex | 52d04bb05 |
22230121221 has 80 divisors (see below), whose sum is σ = 41447374848. Its totient is φ = 11535501600.
The previous prime is 22230121217. The next prime is 22230121231. The reversal of 22230121221 is 12212103222.
It is not a de Polignac number, because 22230121221 - 22 = 22230121217 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 22230121194 and 22230121203.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22230121231) by changing a digit.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9173416 + ... + 9175838.
Almost surely, 222230121221 is an apocalyptic number.
22230121221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
It is an amenable number.
22230121221 is a deficient number, since it is larger than the sum of its proper divisors (19217253627).
22230121221 is a wasteful number, since it uses less digits than its factorization.
22230121221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3924 (or 3915 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
Adding to 22230121221 its reverse (12212103222), we get a palindrome (34442224443).
The spelling of 22230121221 in words is "twenty-two billion, two hundred thirty million, one hundred twenty-one thousand, two hundred twenty-one".
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