Base | Representation |
---|---|
bin | 10110100010011100… |
… | …01110010001011010 |
3 | 1011020021110211101200 |
4 | 23101032032101122 |
5 | 144240111214320 |
6 | 5320403055030 |
7 | 605565110001 |
oct | 132116162132 |
9 | 34207424350 |
10 | 12100101210 |
11 | 514a21214a |
12 | 2418371476 |
13 | 11aab12402 |
14 | 82b037c38 |
15 | 4ac445290 |
hex | 2d138e45a |
12100101210 has 48 divisors (see below), whose sum is σ = 31469592960. Its totient is φ = 3225736800.
The previous prime is 12100101197. The next prime is 12100101253. The reversal of 12100101210 is 1210100121.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 12100101192 and 12100101201.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316635 + ... + 352785.
It is an arithmetic number, because the mean of its divisors is an integer number (655616520).
Almost surely, 212100101210 is an apocalyptic number.
12100101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12100101210 is an abundant number, since it is smaller than the sum of its proper divisors (19369491750).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12100101210 is a wasteful number, since it uses less digits than its factorization.
12100101210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 39883 (or 39880 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
Adding to 12100101210 its reverse (1210100121), we get a palindrome (13310201331).
The spelling of 12100101210 in words is "twelve billion, one hundred million, one hundred one thousand, two hundred ten".
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