12000881 has 2 divisors, whose sum is σ = 12000882. Its totient is φ = 12000880.

The previous prime is 12000851. The next prime is 12000883. The reversal of 12000881 is 18800021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 167281 = 3440^2 + 409^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000881 - 2¹⁰ = 11999857 is a prime.

It is a super-2 number, since 2×12000881² = 288042289552322, which contains 22 as substring.

Together with 12000883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12000883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000440 + 6000441.

It is an arithmetic number, because the mean of its divisors is an integer number (6000441).

Almost surely, 2^12000881 is an apocalyptic number.

It is an amenable number.

12000881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000881 is an equidigital number, since it uses as much as digits as its factorization.

12000881 is an evil number, because the sum of its binary digits is even.

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

The square root of 12000881 is about 3464.2287742007. The cubic root of 12000881 is about 228.9484511138.

The spelling of 12000881 in words is "twelve million, eight hundred eighty-one", and thus it is an aban number.