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212331204200 = 23521061656021
BaseRepresentation
bin1100010110111111101…
…1010000111001101000
3202022001201121202121002
43011233323100321220
511434323242013300
6241313230334132
721224523312443
oct3055773207150
9668051552532
10212331204200
118205a47a455
123519935a348
131703ac888cb
14a3c3ab665a
1557cad195d5
hex316fed0e68

212331204200 has 24 divisors (see below), whose sum is σ = 493670050230. Its totient is φ = 84932481600.

The previous prime is 212331204199. The next prime is 212331204223. The reversal of 212331204200 is 2402133212.

It can be written as a sum of positive squares in 3 ways, for example, as 201240165604 + 11091038596 = 448598^2 + 105314^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530827811 + ... + 530828210.

Almost surely, 2212331204200 is an apocalyptic number.

212331204200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212331204200 is an abundant number, since it is smaller than the sum of its proper divisors (281338846030).

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

212331204200 is a wasteful number, since it uses less digits than its factorization.

212331204200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061656037 (or 1061656028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212331204200 its reverse (2402133212), we get a palindrome (214733337412).

The spelling of 212331204200 in words is "two hundred twelve billion, three hundred thirty-one million, two hundred four thousand, two hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 1061656021 2123312042 4246624084 5308280105 8493248168 10616560210 21233120420 26541400525 42466240840 53082801050 106165602100 212331204200