12230213231 has 4 divisors (see below), whose sum is σ = 12230710464. Its totient is φ = 12229716000.

The previous prime is 12230213221. The next prime is 12230213243. The reversal of 12230213231 is 13231203221.

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-12230213231 is a prime.

It is a super-2 number, since 2×12230213231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230213201) 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, 209690 + ... + 261591.

It is an arithmetic number, because the mean of its divisors is an integer number (3057677616).

Almost surely, 2^12230213231 is an apocalyptic number.

12230213231 is a deficient number, since it is larger than the sum of its proper divisors (497233).

12230213231 is an equidigital number, since it uses as much as digits as its factorization.

12230213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497232.

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

Adding to 12230213231 its reverse (13231203221), we get a palindrome (25461416452).

The spelling of 12230213231 in words is "twelve billion, two hundred thirty million, two hundred thirteen thousand, two hundred thirty-one".