Base | Representation |
---|---|
bin | 10010101000001010… |
… | …001110011100110101 |
3 | 1220121220122021111001 |
4 | 102220022032130311 |
5 | 311430241401401 |
6 | 13104405243301 |
7 | 1305434506222 |
oct | 225012163465 |
9 | 56556567431 |
10 | 20001122101 |
11 | 8534126084 |
12 | 3a62403531 |
13 | 1b699ab5bc |
14 | d7a4d8949 |
15 | 7c0ddd601 |
hex | 4a828e735 |
20001122101 has 8 divisors (see below), whose sum is σ = 20330668440. Its totient is φ = 19673905152.
The previous prime is 20001122093. The next prime is 20001122171. The reversal of 20001122101 is 10122110002.
It can be written as a sum of positive squares in 4 ways, for example, as 225450225 + 19775671876 = 15015^2 + 140626^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20001122101 - 23 = 20001122093 is a prime.
It is a super-2 number, since 2×200011221012 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20001122171) 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, 565030 + ... + 599383.
It is an arithmetic number, because the mean of its divisors is an integer number (2541333555).
Almost surely, 220001122101 is an apocalyptic number.
It is an amenable number.
20001122101 is a deficient number, since it is larger than the sum of its proper divisors (329546339).
20001122101 is a wasteful number, since it uses less digits than its factorization.
20001122101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1164695.
The product of its (nonzero) digits is 8, while the sum is 10.
Adding to 20001122101 its reverse (10122110002), we get a palindrome (30123232103).
The spelling of 20001122101 in words is "twenty billion, one million, one hundred twenty-two thousand, one hundred one".
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