Base | Representation |
---|---|
bin | 10011110001001110… |
… | …111110100010011101 |
3 | 2000210100112122001100 |
4 | 103301032332202131 |
5 | 321433114320123 |
6 | 13430202303313 |
7 | 1351012260534 |
oct | 236116764235 |
9 | 60710478040 |
10 | 21227104413 |
11 | 90031687a9 |
12 | 4144ab7b39 |
13 | 200399c118 |
14 | 105526d31b |
15 | 84385c643 |
hex | 4f13be89d |
21227104413 has 24 divisors (see below), whose sum is σ = 31409389440. Its totient is φ = 13806898560.
The previous prime is 21227104357. The next prime is 21227104427. The reversal of 21227104413 is 31440172212.
21227104413 is a `hidden beast` number, since 21 + 227 + 1 + 0 + 4 + 413 = 666.
It is not a de Polignac number, because 21227104413 - 221 = 21225007261 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21227104433) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322453 + ... + 382661.
It is an arithmetic number, because the mean of its divisors is an integer number (1308724560).
Almost surely, 221227104413 is an apocalyptic number.
It is an amenable number.
21227104413 is a deficient number, since it is larger than the sum of its proper divisors (10182285027).
21227104413 is a wasteful number, since it uses less digits than its factorization.
21227104413 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 61169 (or 61166 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 27.
Adding to 21227104413 its reverse (31440172212), we get a palindrome (52667276625).
The spelling of 21227104413 in words is "twenty-one billion, two hundred twenty-seven million, one hundred four thousand, four hundred thirteen".
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