Base | Representation |
---|---|
bin | 110000001110100111111000… |
… | …000001101101100010101011 |
3 | 1000211000121212201200111012101 |
4 | 300032213320001231202223 |
5 | 210300212034001024321 |
6 | 2031042300454354231 |
7 | 62451344213231350 |
oct | 6016477001554253 |
9 | 1024017781614171 |
10 | 212111121111211 |
11 | 61648904161753 |
12 | 1b95868135b977 |
13 | 9147cba50b47a |
14 | 3a5433965c627 |
15 | 197c76c70d791 |
hex | c0e9f806d8ab |
212111121111211 has 8 divisors (see below), whose sum is σ = 244678249186560. Its totient is φ = 180110377872168.
The previous prime is 212111121111203. The next prime is 212111121111221. The reversal of 212111121111211 is 112111121111212.
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 212111121111211 - 23 = 212111121111203 is a prime.
It is a super-2 number, since 2×2121111211112112 (a number of 29 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (212111121111221) 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 7 ways as a sum of consecutive naturals, for example, 141596208271 + ... + 141596209768.
It is an arithmetic number, because the mean of its divisors is an integer number (30584781148320).
Almost surely, 2212111121111211 is an apocalyptic number.
212111121111211 is a deficient number, since it is larger than the sum of its proper divisors (32567128075349).
212111121111211 is a wasteful number, since it uses less digits than its factorization.
212111121111211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 283192418153.
The product of its digits is 16, while the sum is 19.
Adding to 212111121111211 its reverse (112111121111212), we get a palindrome (324222242222423).
Subtracting from 212111121111211 its reverse (112111121111212), we obtain a palindrome (99999999999999).
The spelling of 212111121111211 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twenty-one million, one hundred eleven thousand, two hundred eleven".
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