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102212012020 = 22519475722957
BaseRepresentation
bin101111100110001001…
…1111000011111110100
3100202211022221012021211
41133030103320133310
53133312233341040
6114542222051204
710245623524066
oct1371423703764
9322738835254
10102212012020
113a39101a508
1217986719b04
13983bb886b1
144d38b47736
1529d352a8ea
hex17cc4f87f4

102212012020 has 48 divisors (see below), whose sum is σ = 230749666560. Its totient is φ = 37908860544.

The previous prime is 102212012017. The next prime is 102212012047. The reversal of 102212012020 is 20210212201.

It is a happy number.

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, 2843619 + ... + 2879338.

It is an arithmetic number, because the mean of its divisors is an integer number (4807284720).

Almost surely, 2102212012020 is an apocalyptic number.

102212012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102212012020 is an abundant number, since it is smaller than the sum of its proper divisors (128537654540).

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

102212012020 is a wasteful number, since it uses less digits than its factorization.

102212012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723032 (or 5723030 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102212012020 its reverse (20210212201), we get a palindrome (122422224221).

The spelling of 102212012020 in words is "one hundred two billion, two hundred twelve million, twelve thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 47 76 94 95 188 190 235 380 470 893 940 1786 3572 4465 8930 17860 5722957 11445914 22891828 28614785 57229570 108736183 114459140 217472366 268978979 434944732 537957958 543680915 1075915916 1087361830 1344894895 2174723660 2689789790 5110600601 5379579580 10221201202 20442402404 25553003005 51106006010 102212012020