Base | Representation |
---|---|
bin | 111000011100111110… |
… | …0011100010101011101 |
3 | 102120220210221120221201 |
4 | 1300321330130111131 |
5 | 3441240143332201 |
6 | 131405353555501 |
7 | 11521136312056 |
oct | 1607174342535 |
9 | 376823846851 |
10 | 121231230301 |
11 | 47460961725 |
12 | 1b5b4115b91 |
13 | b5802c47cc |
14 | 5c20a8572d |
15 | 324810e801 |
hex | 1c39f1c55d |
121231230301 has 2 divisors, whose sum is σ = 121231230302. Its totient is φ = 121231230300.
The previous prime is 121231230293. The next prime is 121231230317. The reversal of 121231230301 is 103032132121.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 112338928900 + 8892301401 = 335170^2 + 94299^2 .
It is an emirp because it is prime and its reverse (103032132121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 121231230301 - 23 = 121231230293 is a prime.
It is a super-2 number, since 2×1212312303012 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (121231230401) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615615150 + 60615615151.
It is an arithmetic number, because the mean of its divisors is an integer number (60615615151).
Almost surely, 2121231230301 is an apocalyptic number.
It is an amenable number.
121231230301 is a deficient number, since it is larger than the sum of its proper divisors (1).
121231230301 is an equidigital number, since it uses as much as digits as its factorization.
121231230301 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 216, while the sum is 19.
Adding to 121231230301 its reverse (103032132121), we get a palindrome (224263362422).
The spelling of 121231230301 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty thousand, three hundred one".
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