12212112203 has 4 divisors (see below), whose sum is σ = 12228549168. Its totient is φ = 12195675240.

The previous prime is 12212112181. The next prime is 12212112233. The reversal of 12212112203 is 30221121221.

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-12212112203 is a prime.

It is a super-4 number, since 4×12212112203⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212112233) 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, 8217368 + ... + 8218853.

It is an arithmetic number, because the mean of its divisors is an integer number (3057137292).

Almost surely, 2^12212112203 is an apocalyptic number.

12212112203 is a deficient number, since it is larger than the sum of its proper divisors (16436965).

12212112203 is an equidigital number, since it uses as much as digits as its factorization.

12212112203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16436964.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12212112203 its reverse (30221121221), we get a palindrome (42433233424).

The spelling of 12212112203 in words is "twelve billion, two hundred twelve million, one hundred twelve thousand, two hundred three".