12111123131203 has 4 divisors (see below), whose sum is σ = 12291886163080. Its totient is φ = 11930360099328.

The previous prime is 12111123131171. The next prime is 12111123131231. The reversal of 12111123131203 is 30213132111121.

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 12111123131203 - 2⁵ = 12111123131171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111123131243) 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, 90381515838 + ... + 90381515971.

It is an arithmetic number, because the mean of its divisors is an integer number (3072971540770).

Almost surely, 2^{12111123131203} is an apocalyptic number.

12111123131203 is a deficient number, since it is larger than the sum of its proper divisors (180763031877).

12111123131203 is an equidigital number, since it uses as much as digits as its factorization.

12111123131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180763031876.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12111123131203 its reverse (30213132111121), we get a palindrome (42324255242324).

The spelling of 12111123131203 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred three".