| Base | Representation |
|---|---|
| bin | 100011110011010… |
| … | …1000101000001100 |
| 3 | 10002201110212211010 |
| 4 | 1013212220220030 |
| 5 | 4430013411340 |
| 6 | 315112125220 |
| 7 | 41524653105 |
| oct | 10746505014 |
| 9 | 3081425733 |
| 10 | 1201310220 |
| 11 | 567121170 |
| 12 | 296396810 |
| 13 | 161b62966 |
| 14 | b57913ac |
| 15 | 706e8b80 |
| hex | 479a8a0c |
1201310220 has 96 divisors (see below), whose sum is σ = 3683264256. Its totient is φ = 290131200.
The previous prime is 1201310203. The next prime is 1201310237. The reversal of 1201310220 is 220131021.
It is an interprime number because it is at equal distance from previous prime (1201310203) and next prime (1201310237).
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 = 1201310196 and 1201310205.
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, 179535 + ... + 186105.
It is an arithmetic number, because the mean of its divisors is an integer number (38367336).
Almost surely, 21201310220 is an apocalyptic number.
1201310220 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 1201310220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841632128).
1201310220 is an abundant number, since it is smaller than the sum of its proper divisors (2481954036).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1201310220 is a wasteful number, since it uses less digits than its factorization.
1201310220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6871 (or 6869 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 1201310220 is about 34659.9223888341. The cubic root of 1201310220 is about 1063.0451830949.
Adding to 1201310220 its reverse (220131021), we get a palindrome (1421441241).
The spelling of 1201310220 in words is "one billion, two hundred one million, three hundred ten thousand, two hundred twenty".
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