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212031210220302 = 2311171214211556371
BaseRepresentation
bin110000001101011101011100…
…111101110110101100001110
31000210201222121121020121220010
4300031131130331312230032
5210242404404304022202
62030541443202534050
762442515022662124
oct6015353475665416
91023658547217803
10212031210220302
1161617a27588650
121b94509b367326
1391405c39a5c35
143a5051867b914
15197a641e9276c
hexc0d75cf76b0e

212031210220302 has 64 divisors (see below), whose sum is σ = 489830460150528. Its totient is φ = 60471822528000.

The previous prime is 212031210220279. The next prime is 212031210220307. The reversal of 212031210220302 is 203022012130212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212031210220307) 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, 135456177 + ... + 137012547.

It is an arithmetic number, because the mean of its divisors is an integer number (7653600939852).

Almost surely, 2212031210220302 is an apocalyptic number.

212031210220302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212031210220302 is an abundant number, since it is smaller than the sum of its proper divisors (277799249930226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212031210220302 is a wasteful number, since it uses less digits than its factorization.

212031210220302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677825.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212031210220302 its reverse (203022012130212), we get a palindrome (415053222350514).

The spelling of 212031210220302 in words is "two hundred twelve trillion, thirty-one billion, two hundred ten million, two hundred twenty thousand, three hundred two".

Divisors: 1 2 3 6 11 17 22 33 34 51 66 102 187 374 561 1122 121421 242842 364263 728526 1335631 1556371 2064157 2671262 3112742 4006893 4128314 4669113 6192471 8013786 9338226 12384942 17120081 22705727 26458307 34240162 45411454 51360243 52916614 68117181 79374921 102720486 136234362 158749842 291041377 582082754 873124131 1746248262 188976123191 377952246382 566928369573 1133856739146 2078737355101 3212594094247 4157474710202 6236212065303 6425188188494 9637782282741 12472424130606 19275564565482 35338535036717 70677070073434 106015605110151 212031210220302