12212111203 has 4 divisors (see below), whose sum is σ = 12213669040. Its totient is φ = 12210553368.

The previous prime is 12212111189. The next prime is 12212111209. The reversal of 12212111203 is 30211121221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212111203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212111209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767100 + ... + 782857.

It is an arithmetic number, because the mean of its divisors is an integer number (3053417260).

Almost surely, 2^12212111203 is an apocalyptic number.

12212111203 is a deficient number, since it is larger than the sum of its proper divisors (1557837).

12212111203 is an equidigital number, since it uses as much as digits as its factorization.

12212111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557836.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12212111203 its reverse (30211121221), we get a palindrome (42423232424).

The spelling of 12212111203 in words is "twelve billion, two hundred twelve million, one hundred eleven thousand, two hundred three".