12111122 has 8 divisors (see below), whose sum is σ = 18589296. Its totient is φ = 5914692.

The previous prime is 12111103. The next prime is 12111139. The reversal of 12111122 is 22111121.

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

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

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 in 3 ways as a sum of consecutive naturals, for example, 70328 + ... + 70499.

It is an arithmetic number, because the mean of its divisors is an integer number (2323662).

Almost surely, 2^12111122 is an apocalyptic number.

12111122 is a deficient number, since it is larger than the sum of its proper divisors (6478174).

12111122 is a wasteful number, since it uses less digits than its factorization.

12111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140872.

The product of its digits is 8, while the sum is 11.

The square root of 12111122 is about 3480.1037340861. The cubic root of 12111122 is about 229.6473613079.

Adding to 12111122 its reverse (22111121), we get a palindrome (34222243).

Subtracting 12111122 from its reverse (22111121), we obtain a palindrome (9999999).

The spelling of 12111122 in words is "twelve million, one hundred eleven thousand, one hundred twenty-two".