12123333112111 has 16 divisors (see below), whose sum is σ = 14063014103040. Its totient is φ = 10358916622560.

The previous prime is 12123333112081. The next prime is 12123333112201. The reversal of 12123333112111 is 11121133332121.

It is a cyclic number.

It is not a de Polignac number, because 12123333112111 - 2¹⁵ = 12123333079343 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 (12123333112811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653962741 + ... + 653981278.

It is an arithmetic number, because the mean of its divisors is an integer number (878938381440).

Almost surely, 2^{12123333112111} is an apocalyptic number.

12123333112111 is a deficient number, since it is larger than the sum of its proper divisors (1939680990929).

12123333112111 is a wasteful number, since it uses less digits than its factorization.

12123333112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307944086.

The product of its digits is 648, while the sum is 25.

Adding to 12123333112111 its reverse (11121133332121), we get a palindrome (23244466444232).

The spelling of 12123333112111 in words is "twelve trillion, one hundred twenty-three billion, three hundred thirty-three million, one hundred twelve thousand, one hundred eleven".