Base | Representation |
---|---|
bin | 111011101010100… |
… | …011001110110101 |
3 | 2120202120120201012 |
4 | 323222203032311 |
5 | 4022224310401 |
6 | 243155042005 |
7 | 33543305540 |
oct | 7352431665 |
9 | 2522516635 |
10 | 1001010101 |
11 | 474053783 |
12 | 23b2a0305 |
13 | 12c501b90 |
14 | 96d31857 |
15 | 5cd308bb |
hex | 3baa33b5 |
1001010101 has 8 divisors (see below), whose sum is σ = 1232012544. Its totient is φ = 792007920.
The previous prime is 1001010053. The next prime is 1001010103. The reversal of 1001010101 is 1010101001.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1001010101 is a prime.
1001010101 is a modest number, since divided by 10101 gives 1001 as remainder.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1001010103) 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, 5499965 + ... + 5500146.
It is an arithmetic number, because the mean of its divisors is an integer number (154001568).
Almost surely, 21001010101 is an apocalyptic number.
It is an amenable number.
1001010101 is a deficient number, since it is larger than the sum of its proper divisors (231002443).
1001010101 is a wasteful number, since it uses less digits than its factorization.
1001010101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11000131.
The product of its (nonzero) digits is 1, while the sum is 5.
The square root of 1001010101 is about 31638.7436697477. The cubic root of 1001010101 is about 1000.3365870298.
Adding to 1001010101 its reverse (1010101001), we get a palindrome (2011111102).
The spelling of 1001010101 in words is "one billion, one million, ten thousand, one hundred one".
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