12312011224 has 16 divisors (see below), whose sum is σ = 23401255320. Its totient is φ = 6071676480.

The previous prime is 12312011221. The next prime is 12312011227. The reversal of 12312011224 is 42211021321.

It is an interprime number because it is at equal distance from previous prime (12312011221) and next prime (12312011227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312011221) 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, 10540522 + ... + 10541689.

Almost surely, 2^12312011224 is an apocalyptic number.

It is an amenable number.

12312011224 is a deficient number, since it is larger than the sum of its proper divisors (11089244096).

12312011224 is a wasteful number, since it uses less digits than its factorization.

12312011224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21082290 (or 21082286 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12312011224 its reverse (42211021321), we get a palindrome (54523032545).

The spelling of 12312011224 in words is "twelve billion, three hundred twelve million, eleven thousand, two hundred twenty-four".