12213123203 has 4 divisors (see below), whose sum is σ = 12497149368. Its totient is φ = 11929097040.

The previous prime is 12213123199. The next prime is 12213123217. The reversal of 12213123203 is 30232131221.

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 12213123203 - 2² = 12213123199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213125203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142013018 + ... + 142013103.

It is an arithmetic number, because the mean of its divisors is an integer number (3124287342).

Almost surely, 2^12213123203 is an apocalyptic number.

12213123203 is a deficient number, since it is larger than the sum of its proper divisors (284026165).

12213123203 is an equidigital number, since it uses as much as digits as its factorization.

12213123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284026164.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12213123203 its reverse (30232131221), we get a palindrome (42445254424).

The spelling of 12213123203 in words is "twelve billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred three".