12011667 has 8 divisors (see below), whose sum is σ = 16858560. Its totient is φ = 7586280.

The previous prime is 12011651. The next prime is 12011669. The reversal of 12011667 is 76611021.

12011667 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011667 - 2⁴ = 12011651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105309 + ... + 105422.

It is an arithmetic number, because the mean of its divisors is an integer number (2107320).

Almost surely, 2^12011667 is an apocalyptic number.

12011667 is a deficient number, since it is larger than the sum of its proper divisors (4846893).

12011667 is a wasteful number, since it uses less digits than its factorization.

12011667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210753.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12011667 is about 3465.7851924203. The cubic root of 12011667 is about 229.0170210393.

Adding to 12011667 its reverse (76611021), we get a palindrome (88622688).

The spelling of 12011667 in words is "twelve million, eleven thousand, six hundred sixty-seven".