12320203213 has 2 divisors, whose sum is σ = 12320203214. Its totient is φ = 12320203212.

The previous prime is 12320203199. The next prime is 12320203321. The reversal of 12320203213 is 31230202321.

Together with next prime (12320203321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8575130404 + 3745072809 = 92602^2 + 61197^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320203213 - 2¹³ = 12320195021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320201213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160101606 + 6160101607.

It is an arithmetic number, because the mean of its divisors is an integer number (6160101607).

Almost surely, 2^12320203213 is an apocalyptic number.

It is an amenable number.

12320203213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320203213 is an equidigital number, since it uses as much as digits as its factorization.

12320203213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12320203213 its reverse (31230202321), we get a palindrome (43550405534).

The spelling of 12320203213 in words is "twelve billion, three hundred twenty million, two hundred three thousand, two hundred thirteen".