Base | Representation |
---|---|
bin | 10110111101111000111111… |
… | …110010001111000110101001 |
3 | 111020122110202022101000122022 |
4 | 112331320333302033012221 |
5 | 101214422201404013001 |
6 | 554455223203034225 |
7 | 30163511500034306 |
oct | 2675707762170651 |
9 | 436573668330568 |
10 | 101010111001001 |
11 | 2a204169371844 |
12 | b3b452996b975 |
13 | 444929c0c4ac7 |
14 | 1ad2cb60340ad |
15 | ba2788a1d11b |
hex | 5bde3fc8f1a9 |
101010111001001 has 4 divisors (see below), whose sum is σ = 106951882236372. Its totient is φ = 95068339765632.
The previous prime is 101010111000991. The next prime is 101010111001031. The reversal of 101010111001001 is 100100111010101.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 27181374707776 + 73828736293225 = 5213576^2 + 8592365^2 .
It is a cyclic number.
It is not a de Polignac number, because 101010111001001 - 218 = 101010110738857 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 101010111001001.
It is not an unprimeable number, because it can be changed into a prime (101010111001031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (29) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970885617660 + ... + 2970885617693.
It is an arithmetic number, because the mean of its divisors is an integer number (26737970559093).
Almost surely, 2101010111001001 is an apocalyptic number.
It is an amenable number.
101010111001001 is a deficient number, since it is larger than the sum of its proper divisors (5941771235371).
101010111001001 is an equidigital number, since it uses as much as digits as its factorization.
101010111001001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5941771235370.
The product of its (nonzero) digits is 1, while the sum is 8.
Adding to 101010111001001 its reverse (100100111010101), we get a palindrome (201110222011102).
The spelling of 101010111001001 in words is "one hundred one trillion, ten billion, one hundred eleven million, one thousand, one".
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