12011323103 has 4 divisors (see below), whose sum is σ = 12935271048. Its totient is φ = 11087375160.

The previous prime is 12011323087. The next prime is 12011323187. The reversal of 12011323103 is 30132311021.

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

It is a cyclic number.

It is not a de Polignac number, because 12011323103 - 2⁴ = 12011323087 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 (12011323003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461973953 + ... + 461973978.

It is an arithmetic number, because the mean of its divisors is an integer number (3233817762).

Almost surely, 2^12011323103 is an apocalyptic number.

12011323103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12011323103 is a deficient number, since it is larger than the sum of its proper divisors (923947945).

12011323103 is an equidigital number, since it uses as much as digits as its factorization.

12011323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923947944.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12011323103 its reverse (30132311021), we get a palindrome (42143634124).

The spelling of 12011323103 in words is "twelve billion, eleven million, three hundred twenty-three thousand, one hundred three".