Base | Representation |
---|---|
bin | 1100010010110100111… |
… | …0101011011100101001 |
3 | 202012011202001111010021 |
4 | 3010231032223130221 |
5 | 11430030312021301 |
6 | 241010214520441 |
7 | 21155015151433 |
oct | 3045516533451 |
9 | 665152044107 |
10 | 211212220201 |
11 | 81635879194 |
12 | 34b26666121 |
13 | 16bc01bc0b8 |
14 | a319235653 |
15 | 57629838a1 |
hex | 312d3ab729 |
211212220201 has 8 divisors (see below), whose sum is σ = 216918748800. Its totient is φ = 205576580400.
The previous prime is 211212220183. The next prime is 211212220229. The reversal of 211212220201 is 102022212112.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 211212220201 - 25 = 211212220169 is a prime.
It is a super-2 number, since 2×2112122202012 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (211212220231) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17716161 + ... + 17728078.
It is an arithmetic number, because the mean of its divisors is an integer number (27114843600).
Almost surely, 2211212220201 is an apocalyptic number.
It is an amenable number.
211212220201 is a deficient number, since it is larger than the sum of its proper divisors (5706528599).
211212220201 is a wasteful number, since it uses less digits than its factorization.
211212220201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35444399.
The product of its (nonzero) digits is 64, while the sum is 16.
Adding to 211212220201 its reverse (102022212112), we get a palindrome (313234432313).
The spelling of 211212220201 in words is "two hundred eleven billion, two hundred twelve million, two hundred twenty thousand, two hundred one".
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