12103111133 has 4 divisors (see below), whose sum is σ = 12103619580. Its totient is φ = 12102602688.

The previous prime is 12103111127. The next prime is 12103111147. The reversal of 12103111133 is 33111130121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1949928964 + 10153182169 = 44158^2 + 100763^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103111133 - 2⁴ = 12103111117 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 (12103111193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216668 + ... + 266741.

It is an arithmetic number, because the mean of its divisors is an integer number (3025904895).

Almost surely, 2^12103111133 is an apocalyptic number.

It is an amenable number.

12103111133 is a deficient number, since it is larger than the sum of its proper divisors (508447).

12103111133 is an equidigital number, since it uses as much as digits as its factorization.

12103111133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508446.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 12103111133 its reverse (33111130121), we get a palindrome (45214241254).

The spelling of 12103111133 in words is "twelve billion, one hundred three million, one hundred eleven thousand, one hundred thirty-three".