12111128 has 8 divisors (see below), whose sum is σ = 22708380. Its totient is φ = 6055560.

The previous prime is 12111103. The next prime is 12111139. The reversal of 12111128 is 82111121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756938 + ... + 756953.

Almost surely, 2^12111128 is an apocalyptic number.

It is an amenable number.

12111128 is a deficient number, since it is larger than the sum of its proper divisors (10597252).

12111128 is a wasteful number, since it uses less digits than its factorization.

12111128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513897 (or 1513893 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

The square root of 12111128 is about 3480.1045961293. The cubic root of 12111128 is about 229.6473992313.

Adding to 12111128 its reverse (82111121), we get a palindrome (94222249).

The spelling of 12111128 in words is "twelve million, one hundred eleven thousand, one hundred twenty-eight".