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12120102202220 = 2257118147156261
BaseRepresentation
bin1011000001011110111001…
…1000101110101101101100
31120220200002202120010101022
42300113232120232231230
53042033432130432340
641435521553033312
72360435300621405
oct260275630565554
946820082503338
1012120102202220
1139531197a4a71
121438b59855838
1369bbc7b0bc2c
142dc88a72a9ac
15160411d633b5
hexb05ee62eb6c

12120102202220 has 48 divisors (see below), whose sum is σ = 25953297604416. Its totient is φ = 4753351008000.

The previous prime is 12120102202207. The next prime is 12120102202249. The reversal of 12120102202220 is 2220220102121.

It is a happy 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, 23321111 + ... + 23835150.

It is an arithmetic number, because the mean of its divisors is an integer number (540693700092).

Almost surely, 212120102202220 is an apocalyptic number.

12120102202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120102202220 is an abundant number, since it is smaller than the sum of its proper divisors (13833195402196).

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

12120102202220 is a wasteful number, since it uses less digits than its factorization.

12120102202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47156522 (or 47156520 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12120102202220 its reverse (2220220102121), we get a palindrome (14340322304341).

The spelling of 12120102202220 in words is "twelve trillion, one hundred twenty billion, one hundred two million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 71 142 181 284 355 362 710 724 905 1420 1810 3620 12851 25702 51404 64255 128510 257020 47156261 94312522 188625044 235781305 471562610 943125220 3348094531 6696189062 8535283241 13392378124 16740472655 17070566482 33480945310 34141132964 42676416205 66961890620 85352832410 170705664820 606005110111 1212010220222 2424020440444 3030025550555 6060051101110 12120102202220