Base | Representation |
---|---|
bin | 1001101001000001111110… |
… | …11000101110100110101100 |
3 | 2210001210112200021121112020 |
4 | 10310200333120232212230 |
5 | 10234324143114120022 |
6 | 113031340504110140 |
7 | 4315503042530052 |
oct | 464407730564654 |
9 | 83053480247466 |
10 | 21201022020012 |
11 | 683433724796a |
12 | 2464a97465350 |
13 | baa32b5485c3 |
14 | 5341c63c61d2 |
15 | 26b74965235c |
hex | 13483f62e9ac |
21201022020012 has 24 divisors (see below), whose sum is σ = 51174880738800. Its totient is φ = 6823317431616.
The previous prime is 21201022020007. The next prime is 21201022020023. The reversal of 21201022020012 is 21002022010212.
It is a junction number, because it is equal to n+sod(n) for n = 21201022019973 and 21201022020000.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30461238187 + ... + 30461238882.
It is an arithmetic number, because the mean of its divisors is an integer number (2132286697450).
Almost surely, 221201022020012 is an apocalyptic number.
It is an amenable number.
21201022020012 is an abundant number, since it is smaller than the sum of its proper divisors (29973858718788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21201022020012 is a wasteful number, since it uses less digits than its factorization.
21201022020012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 60922477105 (or 60922477103 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 15.
Adding to 21201022020012 its reverse (21002022010212), we get a palindrome (42203044030224).
The spelling of 21201022020012 in words is "twenty-one trillion, two hundred one billion, twenty-two million, twenty thousand, twelve".
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