Base | Representation |
---|---|
bin | 10000001010111001111… |
… | …100011111000100001001 |
3 | 10221020020220201221201121 |
4 | 100022321330133010021 |
5 | 121201240112000314 |
6 | 2210253222515241 |
7 | 143166045244465 |
oct | 20127174370411 |
9 | 3836226657647 |
10 | 1111221203209 |
11 | 3992a2444057 |
12 | 15b441895b21 |
13 | 80a317a1ba0 |
14 | 3bad78b94a5 |
15 | 1dd8ab86d24 |
hex | 102b9f1f109 |
1111221203209 has 8 divisors (see below), whose sum is σ = 1224529984832. Its totient is φ = 1001888168400.
The previous prime is 1111221203207. The next prime is 1111221203293. The reversal of 1111221203209 is 9023021221111.
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 1111221203209 - 21 = 1111221203207 is a prime.
It is a super-2 number, since 2×11112212032092 (a number of 25 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1111221203207) 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 7 ways as a sum of consecutive naturals, for example, 993936117 + ... + 993937234.
It is an arithmetic number, because the mean of its divisors is an integer number (153066248104).
Almost surely, 21111221203209 is an apocalyptic number.
It is an amenable number.
1111221203209 is a deficient number, since it is larger than the sum of its proper divisors (113308781623).
1111221203209 is a wasteful number, since it uses less digits than its factorization.
1111221203209 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1987873407.
The product of its (nonzero) digits is 432, while the sum is 25.
The spelling of 1111221203209 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, two hundred three thousand, two hundred nine".
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