Base | Representation |
---|---|
bin | 100100101010000111100 |
3 | 2021000202100 |
4 | 10211100330 |
5 | 301414322 |
6 | 41425100 |
7 | 13132035 |
oct | 4452074 |
9 | 2230670 |
10 | 1201212 |
11 | 750541 |
12 | 49b190 |
13 | 33099c |
14 | 233a8c |
15 | 18adac |
hex | 12543c |
1201212 has 36 divisors (see below), whose sum is σ = 3091816. Its totient is φ = 393120.
The previous prime is 1201201. The next prime is 1201217. The reversal of 1201212 is 2121021.
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (9).
1201212 is a modest number, since divided by 1212 gives 120 as remainder.
It is a junction number, because it is equal to n+sod(n) for n = 1201194 and 1201203.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1201217) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1923 + ... + 2469.
21201212 is an apocalyptic number.
1201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545908).
1201212 is an abundant number, since it is smaller than the sum of its proper divisors (1890604).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1201212 is a wasteful number, since it uses less digits than its factorization.
1201212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 618 (or 613 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 9.
The square root of 1201212 is about 1095.9981751810. The cubic root of 1201212 is about 106.3016210522.
Adding to 1201212 its reverse (2121021), we get a palindrome (3322233).
The spelling of 1201212 in words is "one million, two hundred one thousand, two hundred twelve".
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