12213313231 has 16 divisors (see below), whose sum is σ = 14254156800. Its totient is φ = 10247979168.

The previous prime is 12213313223. The next prime is 12213313291. The reversal of 12213313231 is 13231331221.

It is not a de Polignac number, because 12213313231 - 2³ = 12213313223 is a prime.

It is a super-2 number, since 2×12213313231² (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 (12213313291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36841 + ... + 160573.

It is an arithmetic number, because the mean of its divisors is an integer number (890884800).

Almost surely, 2^12213313231 is an apocalyptic number.

12213313231 is a deficient number, since it is larger than the sum of its proper divisors (2040843569).

12213313231 is a wasteful number, since it uses less digits than its factorization.

12213313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124038.

The product of its digits is 648, while the sum is 22.

Adding to 12213313231 its reverse (13231331221), we get a palindrome (25444644452).

The spelling of 12213313231 in words is "twelve billion, two hundred thirteen million, three hundred thirteen thousand, two hundred thirty-one".