Base | Representation |
---|---|
bin | 10010101001010110… |
… | …011100101001101100 |
3 | 1220200022020102102012 |
4 | 102221112130221230 |
5 | 312000400300322 |
6 | 13110401420352 |
7 | 1306066366205 |
oct | 225126345154 |
9 | 56608212365 |
10 | 20021103212 |
11 | 85444331a0 |
12 | 3a6903a6b8 |
13 | 1b70b86246 |
14 | d7d01a5ac |
15 | 7c2a38ae2 |
hex | 4a959ca6c |
20021103212 has 48 divisors (see below), whose sum is σ = 38824144128. Its totient is φ = 8957382720.
The previous prime is 20021103173. The next prime is 20021103239. The reversal of 20021103212 is 21230112002.
It is a happy 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 15 ways as a sum of consecutive naturals, for example, 5443118 + ... + 5446794.
It is an arithmetic number, because the mean of its divisors is an integer number (808836336).
Almost surely, 220021103212 is an apocalyptic number.
20021103212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is an amenable number.
20021103212 is a deficient number, since it is larger than the sum of its proper divisors (18803040916).
20021103212 is a wasteful number, since it uses less digits than its factorization.
20021103212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5606 (or 5604 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 14.
Adding to 20021103212 its reverse (21230112002), we get a palindrome (41251215214).
The spelling of 20021103212 in words is "twenty billion, twenty-one million, one hundred three thousand, two hundred twelve".
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