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212212341 = 32112194869
BaseRepresentation
bin11001010011000…
…01101001110101
3112210022111121100
430221201221311
5413311243331
633020240313
75154526605
oct1451415165
9483274540
10212212341
11a9874300
125b0a0099
1334c71b43
1420280c05
151396cae6
hexca61a75

212212341 has 18 divisors (see below), whose sum is σ = 336930230. Its totient is φ = 128612880.

The previous prime is 212212339. The next prime is 212212367. The reversal of 212212341 is 143212212.

It is a happy number.

212212341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 208918116 + 3294225 = 14454^2 + 1815^2 .

It is not a de Polignac number, because 212212341 - 21 = 212212339 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212331) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 96346 + ... + 98523.

Almost surely, 2212212341 is an apocalyptic number.

It is an amenable number.

212212341 is a deficient number, since it is larger than the sum of its proper divisors (124717889).

212212341 is a wasteful number, since it uses less digits than its factorization.

212212341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194897 (or 194883 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212212341 is about 14567.5097734651. The cubic root of 212212341 is about 596.4722067773.

Adding to 212212341 its reverse (143212212), we get a palindrome (355424553).

The spelling of 212212341 in words is "two hundred twelve million, two hundred twelve thousand, three hundred forty-one".

Divisors: 1 3 9 11 33 99 121 363 1089 194869 584607 1753821 2143559 6430677 19292031 23579149 70737447 212212341