Base | Representation |
---|---|
bin | 111111001011111… |
… | …1101011010110101 |
3 | 12110202112211111001 |
4 | 1332113331122311 |
5 | 13320233210401 |
6 | 550215243301 |
7 | 103353326362 |
oct | 17627753265 |
9 | 5422484431 |
10 | 2120210101 |
11 | 998892259 |
12 | 4b2079531 |
13 | 27a345ab9 |
14 | 16182b469 |
15 | c620a601 |
hex | 7e5fd6b5 |
2120210101 has 2 divisors, whose sum is σ = 2120210102. Its totient is φ = 2120210100.
The previous prime is 2120210089. The next prime is 2120210117. The reversal of 2120210101 is 1010120212.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 2052543025 + 67667076 = 45305^2 + 8226^2 .
It is a cyclic number.
It is not a de Polignac number, because 2120210101 - 211 = 2120208053 is a prime.
It is a super-4 number, since 4×21202101014 (a number of 38 digits) contains 4444 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2120210161) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060105050 + 1060105051.
It is an arithmetic number, because the mean of its divisors is an integer number (1060105051).
Almost surely, 22120210101 is an apocalyptic number.
It is an amenable number.
2120210101 is a deficient number, since it is larger than the sum of its proper divisors (1).
2120210101 is an equidigital number, since it uses as much as digits as its factorization.
2120210101 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 2120210101 is about 46045.7392274247. The cubic root of 2120210101 is about 1284.6740937943.
Adding to 2120210101 its reverse (1010120212), we get a palindrome (3130330313).
The spelling of 2120210101 in words is "two billion, one hundred twenty million, two hundred ten thousand, one hundred one".
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