Base | Representation |
---|---|
bin | 1001101001010011000100… |
… | …11011111110110100001111 |
3 | 2210002200020022021210220022 |
4 | 10310221202123332310033 |
5 | 10240001442200304444 |
6 | 113035455324212355 |
7 | 4316246346255260 |
oct | 464514233766417 |
9 | 83080208253808 |
10 | 21210200009999 |
11 | 6838216a58660 |
12 | 246681909a0bb |
13 | bab161b47900 |
14 | 5348172d0967 |
15 | 26bad528b9ee |
hex | 134a626fed0f |
21210200009999 has 48 divisors (see below), whose sum is σ = 28637694478080. Its totient is φ = 15254387815680.
The previous prime is 21210200009959. The next prime is 21210200010011. The reversal of 21210200009999 is 99990000201212.
It is a happy number.
It is not a de Polignac number, because 21210200009999 - 28 = 21210200009743 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21210200009959) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123107987 + ... + 123280155.
It is an arithmetic number, because the mean of its divisors is an integer number (596618634960).
Almost surely, 221210200009999 is an apocalyptic number.
21210200009999 is a deficient number, since it is larger than the sum of its proper divisors (7427494468081).
21210200009999 is a wasteful number, since it uses less digits than its factorization.
21210200009999 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 181680 (or 181667 counting only the distinct ones).
The product of its (nonzero) digits is 52488, while the sum is 44.
The spelling of 21210200009999 in words is "twenty-one trillion, two hundred ten billion, two hundred million, nine thousand, nine hundred ninety-nine".
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