Base | Representation |
---|---|
bin | 1001100011011110001011… |
… | …00101100011010000010011 |
3 | 2202101112111000122120021212 |
4 | 10301233011211203100103 |
5 | 10223211440000000034 |
6 | 112403505531210335 |
7 | 4265631246252632 |
oct | 461570545432023 |
9 | 82345430576255 |
10 | 21010000000019 |
11 | 67703222a7a58 |
12 | 2433a665a69ab |
13 | b95308269a44 |
14 | 528c64827519 |
15 | 2667b94aa2ce |
hex | 131bc5963413 |
21010000000019 has 2 divisors, whose sum is σ = 21010000000020. Its totient is φ = 21010000000018.
The previous prime is 21009999999931. The next prime is 21010000000057. The reversal of 21010000000019 is 91000000001012.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 21010000000019 - 224 = 21009983222803 is a prime.
It is a super-2 number, since 2×210100000000192 (a number of 27 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 21009999999940 and 21010000000012.
It is not a weakly prime, because it can be changed into another prime (21010000000219) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505000000009 + 10505000000010.
It is an arithmetic number, because the mean of its divisors is an integer number (10505000000010).
Almost surely, 221010000000019 is an apocalyptic number.
21010000000019 is a deficient number, since it is larger than the sum of its proper divisors (1).
21010000000019 is an equidigital number, since it uses as much as digits as its factorization.
21010000000019 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 18, while the sum is 14.
The spelling of 21010000000019 in words is "twenty-one trillion, ten billion, nineteen", and thus it is an aban number and an uban number.
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