12123330111 has 12 divisors (see below), whose sum is σ = 17513248480. Its totient is φ = 8081402400.

The previous prime is 12123330101. The next prime is 12123330113. The reversal of 12123330111 is 11103332121.

12123330111 is a `hidden beast` number, since 121 + 233 + 301 + 11 = 666.

It is not a de Polignac number, because 12123330111 - 2⁹ = 12123329599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123330113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33786 + ... + 159336.

Almost surely, 2^12123330111 is an apocalyptic number.

12123330111 is a deficient number, since it is larger than the sum of its proper divisors (5389918369).

12123330111 is a wasteful number, since it uses less digits than its factorization.

12123330111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136286 (or 136283 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12123330111 its reverse (11103332121), we get a palindrome (23226662232).

The spelling of 12123330111 in words is "twelve billion, one hundred twenty-three million, three hundred thirty thousand, one hundred eleven".