Base | Representation |
---|---|
bin | 11011100011111111000001… |
… | …101010110011110111101001 |
3 | 120220012112021222021222121100 |
4 | 123203333001222303313221 |
5 | 111342032241433021301 |
6 | 1105451430022432013 |
7 | 34350602234350230 |
oct | 3343770152636751 |
9 | 526175258258540 |
10 | 121220111220201 |
11 | 35696184644744 |
12 | 11719329b92609 |
13 | 5284013460b76 |
14 | 21d1128551b17 |
15 | e0332ec2b286 |
hex | 6e3fc1ab3de9 |
121220111220201 has 12 divisors (see below), whose sum is σ = 200109389950912. Its totient is φ = 69268634982936.
The previous prime is 121220111220199. The next prime is 121220111220217. The reversal of 121220111220201 is 102022111022121.
121220111220201 is a `hidden beast` number, since 1 + 21 + 220 + 1 + 1 + 1 + 220 + 201 = 666.
It is not a de Polignac number, because 121220111220201 - 21 = 121220111220199 is a prime.
It is a super-2 number, since 2×1212201112202012 (a number of 29 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (121220111228201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (29) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 962064374701 + ... + 962064374826.
Almost surely, 2121220111220201 is an apocalyptic number.
It is an amenable number.
121220111220201 is a deficient number, since it is larger than the sum of its proper divisors (78889278730711).
121220111220201 is a wasteful number, since it uses less digits than its factorization.
121220111220201 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1924128749540 (or 1924128749537 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 18.
Adding to 121220111220201 its reverse (102022111022121), we get a palindrome (223242222242322).
The spelling of 121220111220201 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, two hundred one".
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