12111031111203 has 12 divisors (see below), whose sum is σ = 17654204373520. Its totient is φ = 7999947155376.

The previous prime is 12111031111163. The next prime is 12111031111237. The reversal of 12111031111203 is 30211113011121.

12111031111203 is a `hidden beast` number, since 121 + 110 + 311 + 1 + 120 + 3 = 666.

It is not a de Polignac number, because 12111031111203 - 2¹³ = 12111031103011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111031111603) 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, 6172797751 + ... + 6172799712.

Almost surely, 2^{12111031111203} is an apocalyptic number.

12111031111203 is a deficient number, since it is larger than the sum of its proper divisors (5543173262317).

12111031111203 is a wasteful number, since it uses less digits than its factorization.

12111031111203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12345597578 (or 12345597575 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 12111031111203 its reverse (30211113011121), we get a palindrome (42322144122324).

The spelling of 12111031111203 in words is "twelve trillion, one hundred eleven billion, thirty-one million, one hundred eleven thousand, two hundred three".