Base | Representation |
---|---|
bin | 101000000100… |
… | …1011100011010 |
3 | 1110112102120122 |
4 | 1100021130122 |
5 | 20334311302 |
6 | 2030153242 |
7 | 343404143 |
oct | 120113432 |
9 | 43472518 |
10 | 21010202 |
11 | 10950304 |
12 | 7052822 |
13 | 4478195 |
14 | 2b0caca |
15 | 1ca03a2 |
hex | 140971a |
21010202 has 4 divisors (see below), whose sum is σ = 31515306. Its totient is φ = 10505100.
The previous prime is 21010193. The next prime is 21010217. The reversal of 21010202 is 20201012.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 17986081 + 3024121 = 4241^2 + 1739^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 21010202.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252549 + ... + 5252552.
Almost surely, 221010202 is an apocalyptic number.
21010202 is a deficient number, since it is larger than the sum of its proper divisors (10505104).
21010202 is a wasteful number, since it uses less digits than its factorization.
21010202 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10505103.
The product of its (nonzero) digits is 8, while the sum is 8.
The square root of 21010202 is about 4583.6886892545. The cubic root of 21010202 is about 275.9370874599.
Adding to 21010202 its reverse (20201012), we get a palindrome (41211214).
It can be divided in two parts, 21010 and 202, that added together give a palindrome (21212).
The spelling of 21010202 in words is "twenty-one million, ten thousand, two hundred two".
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