12312232213 has 8 divisors (see below), whose sum is σ = 12483457560. Its totient is φ = 12141911040.

The previous prime is 12312232169. The next prime is 12312232223. The reversal of 12312232213 is 31223221321.

It can be written as a sum of positive squares in 4 ways, for example, as 5975753809 + 6336478404 = 77303^2 + 79602^2 .

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 12312232213 - 2¹⁷ = 12312101141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312232223) 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, 198598 + ... + 253111.

It is an arithmetic number, because the mean of its divisors is an integer number (1560432195).

Almost surely, 2^12312232213 is an apocalyptic number.

It is an amenable number.

12312232213 is a deficient number, since it is larger than the sum of its proper divisors (171225347).

12312232213 is an equidigital number, since it uses as much as digits as its factorization.

12312232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452087.

The product of its digits is 864, while the sum is 22.

Adding to 12312232213 its reverse (31223221321), we get a palindrome (43535453534).

The spelling of 12312232213 in words is "twelve billion, three hundred twelve million, two hundred thirty-two thousand, two hundred thirteen".