Base | Representation |
---|---|
bin | 110111111110100110… |
… | …0110110010110101001 |
3 | 102111021210022110210211 |
4 | 1233331030312112221 |
5 | 3432143300333001 |
6 | 131120310541121 |
7 | 11453653111660 |
oct | 1577514662651 |
9 | 374253273724 |
10 | 120212121001 |
11 | 46a88676835 |
12 | 1b36a9677a1 |
13 | b44a12675b |
14 | 5b655a1dd7 |
15 | 31d8906351 |
hex | 1bfd3365a9 |
120212121001 has 4 divisors (see below), whose sum is σ = 137385281152. Its totient is φ = 103038960852.
The previous prime is 120212120999. The next prime is 120212121019. The reversal of 120212121001 is 100121212021.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100121212021 = 41 ⋅2441980781.
It is a cyclic number.
It is not a de Polignac number, because 120212121001 - 21 = 120212120999 is a prime.
It is not an unprimeable number, because it can be changed into a prime (120212122001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8586580065 + ... + 8586580078.
It is an arithmetic number, because the mean of its divisors is an integer number (34346320288).
Almost surely, 2120212121001 is an apocalyptic number.
It is an amenable number.
120212121001 is a deficient number, since it is larger than the sum of its proper divisors (17173160151).
120212121001 is an equidigital number, since it uses as much as digits as its factorization.
120212121001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17173160150.
The product of its (nonzero) digits is 16, while the sum is 13.
Adding to 120212121001 its reverse (100121212021), we get a palindrome (220333333022).
The spelling of 120212121001 in words is "one hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, one".
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