12021311203 has 4 divisors (see below), whose sum is σ = 13114157688. Its totient is φ = 10928464720.

The previous prime is 12021311179. The next prime is 12021311207. The reversal of 12021311203 is 30211312021.

12021311203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30211312021 = 11 ⋅2746482911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021311203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021311207) 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, 546423226 + ... + 546423247.

It is an arithmetic number, because the mean of its divisors is an integer number (3278539422).

Almost surely, 2^12021311203 is an apocalyptic number.

12021311203 is a deficient number, since it is larger than the sum of its proper divisors (1092846485).

12021311203 is a wasteful number, since it uses less digits than its factorization.

12021311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092846484.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12021311203 its reverse (30211312021), we get a palindrome (42232623224).

The spelling of 12021311203 in words is "twelve billion, twenty-one million, three hundred eleven thousand, two hundred three".