Base | Representation |
---|---|
bin | 1100010110001011011… |
… | …1110111100001100101 |
3 | 202021111110112201001120 |
4 | 3011202313313201211 |
5 | 11433401211210041 |
6 | 241235404444153 |
7 | 21216224015445 |
oct | 3054267674145 |
9 | 667443481046 |
10 | 212112210021 |
11 | 81a578a3928 |
12 | 35137b49659 |
13 | 170047b0c5a |
14 | a3a298c125 |
15 | 57b69ac366 |
hex | 3162df7865 |
212112210021 has 32 divisors (see below), whose sum is σ = 294712639488. Its totient is φ = 135585380160.
The previous prime is 212112210019. The next prime is 212112210029. The reversal of 212112210021 is 120012211212.
It is not a de Polignac number, because 212112210021 - 21 = 212112210019 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212112210029) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2221756 + ... + 2315258.
It is an arithmetic number, because the mean of its divisors is an integer number (9209769984).
Almost surely, 2212112210021 is an apocalyptic number.
It is an amenable number.
212112210021 is a deficient number, since it is larger than the sum of its proper divisors (82600429467).
212112210021 is a wasteful number, since it uses less digits than its factorization.
212112210021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 93841.
The product of its (nonzero) digits is 32, while the sum is 15.
Adding to 212112210021 its reverse (120012211212), we get a palindrome (332124421233).
The spelling of 212112210021 in words is "two hundred twelve billion, one hundred twelve million, two hundred ten thousand, twenty-one".
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