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210112313212 = 221789281123551
BaseRepresentation
bin1100001110101110101…
…0110111011101111100
3202002100002101102101101
43003223222313131330
511420302223010322
6240305124022444
721115531123504
oct3035352673574
9662302342341
10210112313212
1181120a1784a
123487a231a24
1316a76371869
14a25311ca04
1556eb11a327
hex30ebab777c

210112313212 has 48 divisors (see below), whose sum is σ = 395104469760. Its totient is φ = 97416704000.

The previous prime is 210112313207. The next prime is 210112313221. The reversal of 210112313212 is 212313211012.

It is a self number, because there is not a number n which added to its sum of digits gives 210112313212.

It is a congruent number.

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, 1638837 + ... + 1762387.

It is an arithmetic number, because the mean of its divisors is an integer number (8231343120).

Almost surely, 2210112313212 is an apocalyptic number.

It is an amenable number.

210112313212 is a deficient number, since it is larger than the sum of its proper divisors (184992156548).

210112313212 is a wasteful number, since it uses less digits than its factorization.

210112313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123942 (or 123940 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 210112313212 its reverse (212313211012), we get a palindrome (422425524224).

The spelling of 210112313212 in words is "two hundred ten billion, one hundred twelve million, three hundred thirteen thousand, two hundred twelve".

Divisors: 1 2 4 17 34 68 89 178 281 356 562 1124 1513 3026 4777 6052 9554 19108 25009 50018 100036 123551 247102 425153 494204 850306 1700612 2100367 4200734 8401468 10996039 21992078 34717831 43984156 69435662 138871324 186932663 373865326 590203127 747730652 1180406254 2360812508 3089886959 6179773918 12359547836 52528078303 105056156606 210112313212