Base | Representation |
---|---|
bin | 1011101101100100100… |
… | …0010010001010001101 |
3 | 201020100202121021022000 |
4 | 2323121020102022031 |
5 | 11244040044314041 |
6 | 232234000542513 |
7 | 20352130012002 |
oct | 2733110221215 |
9 | 636322537260 |
10 | 201211323021 |
11 | 78373601105 |
12 | 32bb5321a39 |
13 | 15c88279467 |
14 | 9a4ad1b8a9 |
15 | 5379999bb6 |
hex | 2ed921228d |
201211323021 has 32 divisors (see below), whose sum is σ = 303767349120. Its totient is φ = 131587327872.
The previous prime is 201211323011. The next prime is 201211323023. The reversal of 201211323021 is 120323112102.
201211323021 is a `hidden beast` number, since 201 + 211 + 3 + 230 + 21 = 666.
It is not a de Polignac number, because 201211323021 - 215 = 201211290253 is a prime.
It is a super-2 number, since 2×2012113230212 (a number of 23 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 201211322985 and 201211323003.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (201211323023) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14040966 + ... + 14055288.
It is an arithmetic number, because the mean of its divisors is an integer number (9492729660).
Almost surely, 2201211323021 is an apocalyptic number.
It is an amenable number.
201211323021 is a deficient number, since it is larger than the sum of its proper divisors (102556026099).
201211323021 is a wasteful number, since it uses less digits than its factorization.
201211323021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24202 (or 24196 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 201211323021 its reverse (120323112102), we get a palindrome (321534435123).
The spelling of 201211323021 in words is "two hundred one billion, two hundred eleven million, three hundred twenty-three thousand, twenty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.080 sec. • engine limits •