12111110122 has 8 divisors (see below), whose sum is σ = 18182051172. Its totient is φ = 6050426400.

The previous prime is 12111110113. The next prime is 12111110201. The reversal of 12111110122 is 22101111121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8506188441 + 3604921681 = 92229^2 + 60041^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561379 + ... + 2566102.

Almost surely, 2^12111110122 is an apocalyptic number.

12111110122 is a deficient number, since it is larger than the sum of its proper divisors (6070941050).

12111110122 is a wasteful number, since it uses less digits than its factorization.

12111110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128664.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111110122 its reverse (22101111121), we get a palindrome (34212221243).

Subtracting 12111110122 from its reverse (22101111121), we obtain a palindrome (9990000999).

The spelling of 12111110122 in words is "twelve billion, one hundred eleven million, one hundred ten thousand, one hundred twenty-two".