Base | Representation |
---|---|
bin | 101110100010… |
… | …110011111010 |
3 | 211221212220200 |
4 | 232202303322 |
5 | 11110414320 |
6 | 1113303030 |
7 | 205465020 |
oct | 56426372 |
9 | 24855820 |
10 | 12201210 |
11 | 6983a4a |
12 | 4104a76 |
13 | 26b2768 |
14 | 1898710 |
15 | 1110290 |
hex | ba2cfa |
12201210 has 96 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 2747520.
The previous prime is 12201193. The next prime is 12201229. The reversal of 12201210 is 1210221.
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 = 12201192 and 12201201.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67320 + ... + 67500.
It is an arithmetic number, because the mean of its divisors is an integer number (383292).
Almost surely, 212201210 is an apocalyptic number.
12201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 12201210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18398016).
12201210 is an abundant number, since it is smaller than the sum of its proper divisors (24594822).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12201210 is a wasteful number, since it uses less digits than its factorization.
12201210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 308 (or 305 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 9.
The square root of 12201210 is about 3493.0230460162. The cubic root of 12201210 is about 230.2153622382.
Adding to 12201210 its reverse (1210221), we get a palindrome (13411431).
The spelling of 12201210 in words is "twelve million, two hundred one thousand, two hundred ten".
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