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12000002081 is a prime number
BaseRepresentation
bin10110010110100000…
…11000000000100001
31010222022010021012112
423023100120000201
5144034000031311
65302425405105
7603241222544
oct131320300041
933868107175
1012000002081
1150a87631a1
1223aa939795
131193165762
1481ba1c85b
154a377128b
hex2cb418021

12000002081 has 2 divisors, whose sum is σ = 12000002082. Its totient is φ = 12000002080.

The previous prime is 12000002011. The next prime is 12000002093. The reversal of 12000002081 is 18020000021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8614624225 + 3385377856 = 92815^2 + 58184^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000002081 - 218 = 11999739937 is a prime.

It is a super-2 number, since 2×120000020812 (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12000002011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000001040 + 6000001041.

It is an arithmetic number, because the mean of its divisors is an integer number (6000001041).

Almost surely, 212000002081 is an apocalyptic number.

It is an amenable number.

12000002081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000002081 is an equidigital number, since it uses as much as digits as its factorization.

12000002081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

The spelling of 12000002081 in words is "twelve billion, two thousand, eighty-one".