| Base | Representation |
|---|---|
| bin | 100100000111110… |
| … | …0001110010101000 |
| 3 | 10010110122111202110 |
| 4 | 1020033201302220 |
| 5 | 4440234430440 |
| 6 | 320134002320 |
| 7 | 42015041340 |
| oct | 11017416250 |
| 9 | 3113574673 |
| 10 | 1212030120 |
| 11 | 572183194 |
| 12 | 299aa63a0 |
| 13 | 1641470b2 |
| 14 | b6d81d20 |
| 15 | 71615080 |
| hex | 483e1ca8 |
1212030120 has 128 divisors (see below), whose sum is σ = 4171334400. Its totient is φ = 275982336.
The previous prime is 1212030107. The next prime is 1212030139. The reversal of 1212030120 is 210302121.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 1212030096 and 1212030105.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230076 + ... + 235284.
It is an arithmetic number, because the mean of its divisors is an integer number (32588550).
Almost surely, 21212030120 is an apocalyptic number.
1212030120 is a gapful number since it is divisible by the number (10) 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 1212030120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085667200).
1212030120 is an abundant number, since it is smaller than the sum of its proper divisors (2959304280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1212030120 is a wasteful number, since it uses less digits than its factorization.
1212030120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5507 (or 5503 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 1212030120 is about 34814.2229555680. Note that the first 3 decimals coincide. The cubic root of 1212030120 is about 1066.1978543116.
Adding to 1212030120 its reverse (210302121), we get a palindrome (1422332241).
It can be divided in two parts, 1212030 and 120, that multiplied together give a square (145443600 = 120602).
The spelling of 1212030120 in words is "one billion, two hundred twelve million, thirty thousand, one hundred twenty".
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