12111667 has 8 divisors (see below), whose sum is σ = 12950496. Its totient is φ = 11286912.

The previous prime is 12111601. The next prime is 12111707. The reversal of 12111667 is 76611121.

It is a happy number.

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

It is not a de Polignac number, because 12111667 - 2²³ = 3723059 is a prime.

It is a super-3 number, since 3×12111667³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12141667) 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, 1708 + ... + 5209.

It is an arithmetic number, because the mean of its divisors is an integer number (1618812).

Almost surely, 2^12111667 is an apocalyptic number.

12111667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12111667 is a deficient number, since it is larger than the sum of its proper divisors (838829).

12111667 is a wasteful number, since it uses less digits than its factorization.

12111667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037.

The product of its digits is 504, while the sum is 25.

The square root of 12111667 is about 3480.1820354688. The cubic root of 12111667 is about 229.6508059635.

Adding to 12111667 its reverse (76611121), we get a palindrome (88722788).

The spelling of 12111667 in words is "twelve million, one hundred eleven thousand, six hundred sixty-seven".