12078081 has 12 divisors (see below), whose sum is σ = 17585152. Its totient is φ = 7987896.

The previous prime is 12078049. The next prime is 12078097. The reversal of 12078081 is 18087021.

It is not a de Polignac number, because 12078081 - 2⁵ = 12078049 is a prime.

It is a super-2 number, since 2×12078081² = 291760081285122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12078581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4141 + ... + 6426.

Almost surely, 2^12078081 is an apocalyptic number.

It is an amenable number.

12078081 is a deficient number, since it is larger than the sum of its proper divisors (5507071).

12078081 is a wasteful number, since it uses less digits than its factorization.

12078081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700 (or 10697 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 12078081 is about 3475.3533633287. The cubic root of 12078081 is about 229.4383333541.

The spelling of 12078081 in words is "twelve million, seventy-eight thousand, eighty-one".