Base | Representation |
---|---|
bin | 11101101110001010111… |
… | …01111110110011001011 |
3 | 10121121221121000022001002 |
4 | 32313011131332303023 |
5 | 113212424334020412 |
6 | 2101050405245215 |
7 | 133531534434653 |
oct | 16670535766313 |
9 | 3547847008032 |
10 | 1021220220107 |
11 | 36410821138a |
12 | 145b0470380b |
13 | 753ba6c72b9 |
14 | 375da803363 |
15 | 1b86e6b3dc2 |
hex | edc577eccb |
1021220220107 has 2 divisors, whose sum is σ = 1021220220108. Its totient is φ = 1021220220106.
The previous prime is 1021220220047. The next prime is 1021220220109. The reversal of 1021220220107 is 7010220221201.
It is a strong prime.
It is an emirp because it is prime and its reverse (7010220221201) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1021220220107 - 214 = 1021220203723 is a prime.
Together with 1021220220109, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (1021220220109) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510610110053 + 510610110054.
It is an arithmetic number, because the mean of its divisors is an integer number (510610110054).
Almost surely, 21021220220107 is an apocalyptic number.
1021220220107 is a deficient number, since it is larger than the sum of its proper divisors (1).
1021220220107 is an equidigital number, since it uses as much as digits as its factorization.
1021220220107 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 224, while the sum is 20.
Adding to 1021220220107 its reverse (7010220221201), we get a palindrome (8031440441308).
The spelling of 1021220220107 in words is "one trillion, twenty-one billion, two hundred twenty million, two hundred twenty thousand, one hundred seven".
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