Base | Representation |
---|---|
bin | 10011101111110011… |
… | …001001000000000110 |
3 | 2000201200020112012020 |
4 | 103233303021000012 |
5 | 321410433430042 |
6 | 13423542304010 |
7 | 1350300532026 |
oct | 235763110006 |
9 | 60650215166 |
10 | 21203030022 |
11 | 8aa0615309 |
12 | 4138a28006 |
13 | 1ccb9c0315 |
14 | 1051da3a86 |
15 | 8416a43ec |
hex | 4efcc9006 |
21203030022 has 16 divisors (see below), whose sum is σ = 42415095360. Its totient is φ = 7066170792.
The previous prime is 21203029907. The next prime is 21203030099. The reversal of 21203030022 is 22003030212.
It is a super-2 number, since 2×212030300222 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 21203029983 and 21203030010.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345772 + ... + 402447.
It is an arithmetic number, because the mean of its divisors is an integer number (2650943460).
Almost surely, 221203030022 is an apocalyptic number.
21203030022 is an abundant number, since it is smaller than the sum of its proper divisors (21212065338).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21203030022 is a wasteful number, since it uses less digits than its factorization.
21203030022 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 752947.
The product of its (nonzero) digits is 144, while the sum is 15.
Adding to 21203030022 its reverse (22003030212), we get a palindrome (43206060234).
The spelling of 21203030022 in words is "twenty-one billion, two hundred three million, thirty thousand, twenty-two".
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