12131232213 has 8 divisors (see below), whose sum is σ = 16265340000. Its totient is φ = 8042306288.

The previous prime is 12131232133. The next prime is 12131232229. The reversal of 12131232213 is 31223213121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12131232213 - 2¹² = 12131228117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12131232213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131232293) 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 7 ways as a sum of consecutive naturals, for example, 11294838 + ... + 11295911.

It is an arithmetic number, because the mean of its divisors is an integer number (2033167500).

Almost surely, 2^12131232213 is an apocalyptic number.

It is an amenable number.

12131232213 is a deficient number, since it is larger than the sum of its proper divisors (4134107787).

12131232213 is a wasteful number, since it uses less digits than its factorization.

12131232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22590931.

The product of its digits is 432, while the sum is 21.

Adding to 12131232213 its reverse (31223213121), we get a palindrome (43354445334).

The spelling of 12131232213 in words is "twelve billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred thirteen".