Base | Representation |
---|---|
bin | 10011111100010000… |
… | …110011000110000001 |
3 | 2001021020200222002100 |
4 | 103330100303012001 |
5 | 322323001144301 |
6 | 13500412141013 |
7 | 1355420053326 |
oct | 237420630601 |
9 | 61236628070 |
10 | 21412131201 |
11 | 90986540aa |
12 | 4196a67769 |
13 | 2033113026 |
14 | 1071a74b4d |
15 | 854c0a286 |
hex | 4fc433181 |
21412131201 has 12 divisors (see below), whose sum is σ = 30949424740. Its totient is φ = 14265158400.
The previous prime is 21412131161. The next prime is 21412131217. The reversal of 21412131201 is 10213121412.
21412131201 is a `hidden beast` number, since 21 + 412 + 1 + 31 + 201 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 14084942400 + 7327188801 = 118680^2 + 85599^2 .
It is not a de Polignac number, because 21412131201 - 29 = 21412130689 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (21412131101) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785500 + ... + 812301.
Almost surely, 221412131201 is an apocalyptic number.
It is an amenable number.
21412131201 is a deficient number, since it is larger than the sum of its proper divisors (9537293539).
21412131201 is a wasteful number, since it uses less digits than its factorization.
21412131201 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1599296 (or 1599293 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 18.
Adding to 21412131201 its reverse (10213121412), we get a palindrome (31625252613).
The spelling of 21412131201 in words is "twenty-one billion, four hundred twelve million, one hundred thirty-one thousand, two hundred one".
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