Base | Representation |
---|---|
bin | 1001101001010011000100… |
… | …11011111100100111111101 |
3 | 2210002200020022021100120210 |
4 | 10310221202123330213331 |
5 | 10240001442200013041 |
6 | 113035455324103033 |
7 | 4316246346220143 |
oct | 464514233744775 |
9 | 83080208240523 |
10 | 21210200001021 |
11 | 6838216a51939 |
12 | 2466819094a79 |
13 | bab161b437b5 |
14 | 5348172cb593 |
15 | 26bad5289016 |
hex | 134a626fc9fd |
21210200001021 has 8 divisors (see below), whose sum is σ = 28287299826784. Its totient is φ = 14136616754640.
The previous prime is 21210200000959. The next prime is 21210200001071. The reversal of 21210200001021 is 12010000201212.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 21210200001021 - 27 = 21210200000893 is a prime.
It is a super-2 number, since 2×212102000010212 (a number of 27 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 21210200000988 and 21210200001006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21210200001071) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879130771 + ... + 879154896.
It is an arithmetic number, because the mean of its divisors is an integer number (3535912478348).
Almost surely, 221210200001021 is an apocalyptic number.
It is an amenable number.
21210200001021 is a deficient number, since it is larger than the sum of its proper divisors (7077099825763).
21210200001021 is a wasteful number, since it uses less digits than its factorization.
21210200001021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1758289691.
The product of its (nonzero) digits is 16, while the sum is 12.
Adding to 21210200001021 its reverse (12010000201212), we get a palindrome (33220200202233).
The spelling of 21210200001021 in words is "twenty-one trillion, two hundred ten billion, two hundred million, one thousand, twenty-one".
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