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201212212302 = 23211178456239
BaseRepresentation
bin1011101101100100101…
…1101011010001001110
3201020100211021110011100
42323121023223101032
511244040311243202
6232234032003530
720352140404443
oct2733113532116
9636324243140
10201212212302
1178374059252
1232bb56905a6
1315c884cb16a
149a4b0ad9ca
155379ac341c
hex2ed92eb44e

201212212302 has 12 divisors (see below), whose sum is σ = 435959793360. Its totient is φ = 67070737428.

The previous prime is 201212212273. The next prime is 201212212309. The reversal of 201212212302 is 203212212102.

201212212302 is a `hidden beast` number, since 20 + 121 + 221 + 2 + 302 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11178456239 = 201212212302 / (2 + 0 + 1 + 2 + 1 + 2 + 2 + 1 + 2 + 3 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212212309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5589228102 + ... + 5589228137.

It is an arithmetic number, because the mean of its divisors is an integer number (36329982780).

Almost surely, 2201212212302 is an apocalyptic number.

201212212302 is an abundant number, since it is smaller than the sum of its proper divisors (234747581058).

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

201212212302 is a wasteful number, since it uses less digits than its factorization.

201212212302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11178456247 (or 11178456244 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201212212302 its reverse (203212212102), we get a palindrome (404424424404).

The spelling of 201212212302 in words is "two hundred one billion, two hundred twelve million, two hundred twelve thousand, three hundred two".

Divisors: 1 2 3 6 9 18 11178456239 22356912478 33535368717 67070737434 100606106151 201212212302