12111210120203 has 4 divisors (see below), whose sum is σ = 12141412639608. Its totient is φ = 12081007600800.

The previous prime is 12111210120197. The next prime is 12111210120211. The reversal of 12111210120203 is 30202101211121.

It is a happy number.

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 12111210120203 - 2²⁰ = 12111209071627 is a prime.

It is a super-2 number, since 2×12111210120203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111210120283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15101259101 + ... + 15101259902.

It is an arithmetic number, because the mean of its divisors is an integer number (3035353159902).

Almost surely, 2^{12111210120203} is an apocalyptic number.

12111210120203 is a deficient number, since it is larger than the sum of its proper divisors (30202519405).

12111210120203 is an equidigital number, since it uses as much as digits as its factorization.

12111210120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30202519404.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12111210120203 its reverse (30202101211121), we get a palindrome (42313311331324).

The spelling of 12111210120203 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, one hundred twenty thousand, two hundred three".