Base | Representation |
---|---|
bin | 111011111111111… |
… | …0101010101001101 |
3 | 12012022020021200222 |
4 | 1313333311111031 |
5 | 13110341102341 |
6 | 531434201125 |
7 | 100614051353 |
oct | 16777652515 |
9 | 5168207628 |
10 | 2013222221 |
11 | 94345871a |
12 | 4822831a5 |
13 | 26112676a |
14 | 15153b7d3 |
15 | bbb2544b |
hex | 77ff554d |
2013222221 has 8 divisors (see below), whose sum is σ = 2063935104. Its totient is φ = 1962586080.
The previous prime is 2013222199. The next prime is 2013222247. The reversal of 2013222221 is 1222223102.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2013222221 - 230 = 939480397 is a prime.
It is a super-2 number, since 2×20132222212 = 8106127422256345682, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 2013222221.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2013222521) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35906 + ... + 72908.
It is an arithmetic number, because the mean of its divisors is an integer number (257991888).
Almost surely, 22013222221 is an apocalyptic number.
It is an amenable number.
2013222221 is a deficient number, since it is larger than the sum of its proper divisors (50712883).
2013222221 is a wasteful number, since it uses less digits than its factorization.
2013222221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 38371.
The product of its (nonzero) digits is 192, while the sum is 17.
The square root of 2013222221 is about 44868.9449508232. The cubic root of 2013222221 is about 1262.6914461301.
Adding to 2013222221 its reverse (1222223102), we get a palindrome (3235445323).
The spelling of 2013222221 in words is "two billion, thirteen million, two hundred twenty-two thousand, two hundred twenty-one".
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