Base | Representation |
---|---|
bin | 10011101010111010… |
… | …010000111000010110 |
3 | 2000111221220112112220 |
4 | 103222322100320112 |
5 | 321223434324342 |
6 | 13411452323210 |
7 | 1345253430123 |
oct | 235272207026 |
9 | 60457815486 |
10 | 21121011222 |
11 | 8a59295383 |
12 | 4115473506 |
13 | 1cb7a0409c |
14 | 104513374a |
15 | 8393a25ec |
hex | 4eae90e16 |
21121011222 has 16 divisors (see below), whose sum is σ = 42258012672. Its totient is φ = 7037672040.
The previous prime is 21121011209. The next prime is 21121011239. The reversal of 21121011222 is 22211012112.
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 7 ways as a sum of consecutive naturals, for example, 649054 + ... + 680817.
It is an arithmetic number, because the mean of its divisors is an integer number (2641125792).
Almost surely, 221121011222 is an apocalyptic number.
21121011222 is an abundant number, since it is smaller than the sum of its proper divisors (21137001450).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21121011222 is a wasteful number, since it uses less digits than its factorization.
21121011222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1332523.
The product of its (nonzero) digits is 32, while the sum is 15.
Adding to 21121011222 its reverse (22211012112), we get a palindrome (43332023334).
The spelling of 21121011222 in words is "twenty-one billion, one hundred twenty-one million, eleven thousand, two hundred twenty-two".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •