12019081 has 2 divisors, whose sum is σ = 12019082. Its totient is φ = 12019080.

The previous prime is 12019069. The next prime is 12019097. The reversal of 12019081 is 18091021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6843456 + 5175625 = 2616^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 12019081 - 2⁷ = 12018953 is a prime.

It is a super-2 number, since 2×12019081² = 288916616169122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12019481) 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, 6009540 + 6009541.

It is an arithmetic number, because the mean of its divisors is an integer number (6009541).

Almost surely, 2^12019081 is an apocalyptic number.

It is an amenable number.

12019081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12019081 is an equidigital number, since it uses as much as digits as its factorization.

12019081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 12019081 is about 3466.8546263148. The cubic root of 12019081 is about 229.0641303199.

The spelling of 12019081 in words is "twelve million, nineteen thousand, eighty-one".