Base | Representation |
---|---|
bin | 111011101010100… |
… | …101111010101101 |
3 | 2120202121010210121 |
4 | 323222211322231 |
5 | 4022230133401 |
6 | 243155204541 |
7 | 33543352603 |
oct | 7352457255 |
9 | 2522533717 |
10 | 1001021101 |
11 | 474060a73 |
12 | 23b2a6751 |
13 | 12c506ba2 |
14 | 96d35873 |
15 | 5cd33ca1 |
hex | 3baa5ead |
1001021101 has 4 divisors (see below), whose sum is σ = 1035539100. Its totient is φ = 966503104.
The previous prime is 1001021069. The next prime is 1001021107. The reversal of 1001021101 is 1011201001.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1011201001 = 89 ⋅11361809.
It can be written as a sum of positive squares in 2 ways, for example, as 735819876 + 265201225 = 27126^2 + 16285^2 .
It is a cyclic number.
It is not a de Polignac number, because 1001021101 - 25 = 1001021069 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1001021107) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17258956 + ... + 17259013.
It is an arithmetic number, because the mean of its divisors is an integer number (258884775).
Almost surely, 21001021101 is an apocalyptic number.
It is an amenable number.
1001021101 is a deficient number, since it is larger than the sum of its proper divisors (34517999).
1001021101 is an equidigital number, since it uses as much as digits as its factorization.
1001021101 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 34517998.
The product of its (nonzero) digits is 2, while the sum is 7.
The square root of 1001021101 is about 31638.9175067669. The cubic root of 1001021101 is about 1000.3402512160.
Adding to 1001021101 its reverse (1011201001), we get a palindrome (2012222102).
It can be divided in two parts, 100 and 1021101, that added together give a palindrome (1021201).
The spelling of 1001021101 in words is "one billion, one million, twenty-one thousand, one hundred one".
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