12007081 has 4 divisors (see below), whose sum is σ = 12529152. Its totient is φ = 11485012.

The previous prime is 12007027. The next prime is 12007103. The reversal of 12007081 is 18070021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18070021 = 3469 ⋅5209.

It is a cyclic number.

It is not a de Polignac number, because 12007081 - 2¹⁷ = 11876009 is a prime.

It is a super-2 number, since 2×12007081² = 288339988281122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12007181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261001 + ... + 261046.

It is an arithmetic number, because the mean of its divisors is an integer number (3132288).

Almost surely, 2^12007081 is an apocalyptic number.

It is an amenable number.

12007081 is a deficient number, since it is larger than the sum of its proper divisors (522071).

12007081 is an equidigital number, since it uses as much as digits as its factorization.

12007081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522070.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 12007081 is about 3465.1235187220. The cubic root of 12007081 is about 228.9878714425.

It can be divided in two parts, 1200 and 7081, that added together give a square (8281 = 91²).

The spelling of 12007081 in words is "twelve million, seven thousand, eighty-one".