Base | Representation |
---|---|
bin | 10011110001000000… |
… | …100101000110100010 |
3 | 2000210002102212211001 |
4 | 103301000211012202 |
5 | 321431133031320 |
6 | 13425545342214 |
7 | 1350635221165 |
oct | 236100450642 |
9 | 60702385731 |
10 | 21223330210 |
11 | 9001020125 |
12 | 414379796a |
13 | 2002c7a274 |
14 | 1054969adc |
15 | 84336420a |
hex | 4f10251a2 |
21223330210 has 16 divisors (see below), whose sum is σ = 38229132600. Its totient is φ = 8483301376.
The previous prime is 21223330207. The next prime is 21223330211. The reversal of 21223330210 is 1203332212.
It can be written as a sum of positive squares in 4 ways, for example, as 11684096649 + 9539233561 = 108093^2 + 97669^2 .
It is not an unprimeable number, because it can be changed into a prime (21223330211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739045 + ... + 767224.
Almost surely, 221223330210 is an apocalyptic number.
21223330210 is a deficient number, since it is larger than the sum of its proper divisors (17005802390).
21223330210 is a wasteful number, since it uses less digits than its factorization.
21223330210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1507685.
The product of its (nonzero) digits is 432, while the sum is 19.
Adding to 21223330210 its reverse (1203332212), we get a palindrome (22426662422).
The spelling of 21223330210 in words is "twenty-one billion, two hundred twenty-three million, three hundred thirty thousand, two hundred ten".
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