Base | Representation |
---|---|
bin | 111001000000001010… |
… | …1000111001001001101 |
3 | 102200222002222002200202 |
4 | 1302000111013021031 |
5 | 4001144444232341 |
6 | 132122500103245 |
7 | 11562325462253 |
oct | 1620025071115 |
9 | 380862862622 |
10 | 122412102221 |
11 | 47a07493232 |
12 | 1b883694b25 |
13 | b70ab4c6a6 |
14 | 5cd38365d3 |
15 | 32b6b1c79b |
hex | 1c8054724d |
122412102221 has 8 divisors (see below), whose sum is σ = 127015605504. Its totient is φ = 117849519360.
The previous prime is 122412102143. The next prime is 122412102227. The reversal of 122412102221 is 122201214221.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-122412102221 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 122412102193 and 122412102202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (122412102227) 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, 10224011 + ... + 10235976.
It is an arithmetic number, because the mean of its divisors is an integer number (15876950688).
Almost surely, 2122412102221 is an apocalyptic number.
It is an amenable number.
122412102221 is a deficient number, since it is larger than the sum of its proper divisors (4603503283).
122412102221 is a wasteful number, since it uses less digits than its factorization.
122412102221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20460211.
The product of its (nonzero) digits is 256, while the sum is 20.
Adding to 122412102221 its reverse (122201214221), we get a palindrome (244613316442).
The spelling of 122412102221 in words is "one hundred twenty-two billion, four hundred twelve million, one hundred two thousand, two hundred twenty-one".
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