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12008081 is a prime number
BaseRepresentation
bin101101110011…
…101010010001
3211121001222202
4231303222101
511033224311
61105212545
7204031661
oct55635221
924531882
1012008081
116861938
124031155
132645897
1418481a1
1510c2e3b
hexb73a91

12008081 has 2 divisors, whose sum is σ = 12008082. Its totient is φ = 12008080.

The previous prime is 12008063. The next prime is 12008099. The reversal of 12008081 is 18080021.

It is a balanced prime because it is at equal distance from previous prime (12008063) and next prime (12008099).

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 36481 = 3460^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 12008081 - 222 = 7813777 is a prime.

It is a super-2 number, since 2×120080812 = 288388018605122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12008881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6004040 + 6004041.

It is an arithmetic number, because the mean of its divisors is an integer number (6004041).

Almost surely, 212008081 is an apocalyptic number.

It is an amenable number.

12008081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12008081 is an equidigital number, since it uses as much as digits as its factorization.

12008081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 12008081 is about 3465.2678107182. The cubic root of 12008081 is about 228.9942282890.

The spelling of 12008081 in words is "twelve million, eight thousand, eighty-one".