12203221231 has 6 divisors (see below), whose sum is σ = 12963283760. Its totient is φ = 11485384416.

The previous prime is 12203221211. The next prime is 12203221253. The reversal of 12203221231 is 13212230221.

It is not a de Polignac number, because 12203221231 - 2⁷ = 12203221103 is a prime.

It is a super-2 number, since 2×12203221231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12203221199 and 12203221208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203221211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21112551 + ... + 21113128.

Almost surely, 2^12203221231 is an apocalyptic number.

12203221231 is a deficient number, since it is larger than the sum of its proper divisors (760062529).

12203221231 is an equidigital number, since it uses as much as digits as its factorization.

12203221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42225713 (or 42225696 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12203221231 its reverse (13212230221), we get a palindrome (25415451452).

The spelling of 12203221231 in words is "twelve billion, two hundred three million, two hundred twenty-one thousand, two hundred thirty-one".