12001081 has 2 divisors, whose sum is σ = 12001082. Its totient is φ = 12001080.

The previous prime is 12001057. The next prime is 12001091. The reversal of 12001081 is 18010021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 1863225 = 3184^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001081 - 2¹³ = 11992889 is a prime.

It is a super-2 number, since 2×12001081² = 288051890337122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12001001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000540 + 6000541.

It is an arithmetic number, because the mean of its divisors is an integer number (6000541).

Almost surely, 2^12001081 is an apocalyptic number.

It is an amenable number.

12001081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001081 is an equidigital number, since it uses as much as digits as its factorization.

12001081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 12001081 is about 3464.2576405343. The cubic root of 12001081 is about 228.9497229492.

The spelling of 12001081 in words is "twelve million, one thousand, eighty-one".