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212001110010220 = 22557146171402071
BaseRepresentation
bin110000001101000001011010…
…110110101010100101101100
31000210122002220212101112010111
4300031001122312222211230
5210241411233130311340
62030515544310545404
762440401065264446
oct6015013266524554
91023562825345114
10212001110010220
116160619081a273
121b93b29a968264
13913a80792583b
143a4cca0bc9496
15197997e671aea
hexc0d05adaa96c

212001110010220 has 48 divisors (see below), whose sum is σ = 445992788457216. Its totient is φ = 84649887864000.

The previous prime is 212001110010211. The next prime is 212001110010257. The reversal of 212001110010220 is 22010011100212.

It is a self number, because there is not a number n which added to its sum of digits gives 212001110010220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527071785 + ... + 527473855.

It is an arithmetic number, because the mean of its divisors is an integer number (9291516426192).

Almost surely, 2212001110010220 is an apocalyptic number.

212001110010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212001110010220 is an abundant number, since it is smaller than the sum of its proper divisors (233991678446996).

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

212001110010220 is a wasteful number, since it uses less digits than its factorization.

212001110010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448822 (or 448820 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212001110010220 its reverse (22010011100212), we get a palindrome (234011121110432).

The spelling of 212001110010220 in words is "two hundred twelve trillion, one billion, one hundred ten million, ten thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 571 1142 2284 2855 5710 11420 46171 92342 184684 230855 402071 461710 804142 923420 1608284 2010355 4020710 8041420 26363641 52727282 105454564 131818205 229582541 263636410 459165082 527272820 918330164 1147912705 2295825410 4591650820 18564020141 37128040282 74256080564 92820100705 185640201410 371280402820 10600055500511 21200111001022 42400222002044 53000277502555 106000555005110 212001110010220