Base | Representation |
---|---|
bin | 10010101000000110… |
… | …110000010000100001 |
3 | 1220121211221001001122 |
4 | 102220012300100201 |
5 | 311430023241001 |
6 | 13104333542025 |
7 | 1305423665660 |
oct | 225006602041 |
9 | 56554831048 |
10 | 20000212001 |
11 | 8533664330 |
12 | 3a62044915 |
13 | 1b69750293 |
14 | d7a33cdd7 |
15 | 7c0cadb1b |
hex | 4a81b0421 |
20000212001 has 16 divisors (see below), whose sum is σ = 25182223488. Its totient is φ = 15430272000.
The previous prime is 20000211991. The next prime is 20000212031. The reversal of 20000212001 is 10021200002.
It is not a de Polignac number, because 20000212001 - 222 = 19996017697 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 20000212001.
It is not an unprimeable number, because it can be changed into a prime (20000212031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1278080 + ... + 1293633.
It is an arithmetic number, because the mean of its divisors is an integer number (1573888968).
Almost surely, 220000212001 is an apocalyptic number.
It is an amenable number.
20000212001 is a deficient number, since it is larger than the sum of its proper divisors (5182011487).
20000212001 is a wasteful number, since it uses less digits than its factorization.
20000212001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2571832.
The product of its (nonzero) digits is 8, while the sum is 8.
Adding to 20000212001 its reverse (10021200002), we get a palindrome (30021412003).
The spelling of 20000212001 in words is "twenty billion, two hundred twelve thousand, one".
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