Base | Representation |
---|---|
bin | 10001110000011010110… |
… | …010101111011001011110 |
3 | 11022122121020121202200100 |
4 | 101300122302233121132 |
5 | 124443002334033042 |
6 | 2332321134041530 |
7 | 154105123513515 |
oct | 21603262573136 |
9 | 4278536552610 |
10 | 1220220221022 |
11 | 43054655a460 |
12 | 1785a13492a6 |
13 | 8b0b27a982a |
14 | 430b7b7767c |
15 | 21b19e5724c |
hex | 11c1acaf65e |
1220220221022 has 48 divisors (see below), whose sum is σ = 2885542478208. Its totient is φ = 369586063440.
The previous prime is 1220220220991. The next prime is 1220220221029. The reversal of 1220220221022 is 2201220220221.
1220220221022 is a `hidden beast` number, since 1 + 220 + 220 + 221 + 0 + 2 + 2 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 1220220220986 and 1220220221004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1220220221029) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1066858 + ... + 1891725.
It is an arithmetic number, because the mean of its divisors is an integer number (60115468296).
Almost surely, 21220220221022 is an apocalyptic number.
1220220221022 is an abundant number, since it is smaller than the sum of its proper divisors (1665322257186).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1220220221022 is a wasteful number, since it uses less digits than its factorization.
1220220221022 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2960685 (or 2960682 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 18.
Adding to 1220220221022 its reverse (2201220220221), we get a palindrome (3421440441243).
The spelling of 1220220221022 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, twenty-two".
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