Base | Representation |
---|---|
bin | 1100000010100… |
… | …10001101010101 |
3 | 21001001022222112 |
4 | 12001102031111 |
5 | 201324000041 |
6 | 14004440405 |
7 | 2334325463 |
oct | 601221525 |
9 | 231038875 |
10 | 101000021 |
11 | 520148a1 |
12 | 299a9105 |
13 | 17c03a35 |
14 | d5b1833 |
15 | 8d00deb |
hex | 6052355 |
101000021 has 8 divisors (see below), whose sum is σ = 102685440. Its totient is φ = 99319968.
The previous prime is 100999993. The next prime is 101000023. The reversal of 101000021 is 120000101.
It is a happy number.
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 101000021 - 214 = 100983637 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 100999969 and 101000014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (101000023) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56540 + ... + 58298.
It is an arithmetic number, because the mean of its divisors is an integer number (12835680).
Almost surely, 2101000021 is an apocalyptic number.
It is an amenable number.
101000021 is a deficient number, since it is larger than the sum of its proper divisors (1685419).
101000021 is an equidigital number, since it uses as much as digits as its factorization.
101000021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2683.
The product of its (nonzero) digits is 2, while the sum is 5.
The square root of 101000021 is about 10049.8766659099. The cubic root of 101000021 is about 465.7009830567.
Adding to 101000021 its reverse (120000101), we get a palindrome (221000122).
The spelling of 101000021 in words is "one hundred one million, twenty-one", and thus it is an aban number.
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