Base | Representation |
---|---|
bin | 1001000110000110110011… |
… | …10000001000000110000000 |
3 | 2121211002010112122210020210 |
4 | 10203003121300020012000 |
5 | 10110144042334031422 |
6 | 110312201525434120 |
7 | 4133011642264263 |
oct | 443033160100600 |
9 | 77732115583223 |
10 | 20001021002112 |
11 | 6411426a26037 |
12 | 22b03b956b940 |
13 | b2111b9954b7 |
14 | 4d20a9ab4cda |
15 | 24a41481510c |
hex | 1230d9c08180 |
20001021002112 has 128 divisors (see below), whose sum is σ = 54563120467200. Its totient is φ = 6489114982400.
The previous prime is 20001021002071. The next prime is 20001021002191. The reversal of 20001021002112 is 21120012010002.
It is a tau number, because it is divible by the number of its divisors (128).
It is a super-2 number, since 2×200010210021122 (a number of 27 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082108 + ... + 6658619.
It is an arithmetic number, because the mean of its divisors is an integer number (426274378650).
Almost surely, 220001021002112 is an apocalyptic number.
It is an amenable number.
20001021002112 is an abundant number, since it is smaller than the sum of its proper divisors (34562099465088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20001021002112 is a wasteful number, since it uses less digits than its factorization.
20001021002112 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8740904 (or 8740892 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 12.
Adding to 20001021002112 its reverse (21120012010002), we get a palindrome (41121033012114).
The spelling of 20001021002112 in words is "twenty trillion, one billion, twenty-one million, two thousand, one hundred twelve".
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