12320203111 has 4 divisors (see below), whose sum is σ = 12359818224. Its totient is φ = 12280588000.

The previous prime is 12320203097. The next prime is 12320203121. The reversal of 12320203111 is 11130202321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11130202321 = 7 ⋅1590028903.

It is a cyclic number.

It is not a de Polignac number, because 12320203111 - 2⁹ = 12320202599 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 (12320203121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19807090 + ... + 19807711.

It is an arithmetic number, because the mean of its divisors is an integer number (3089954556).

Almost surely, 2^12320203111 is an apocalyptic number.

12320203111 is a deficient number, since it is larger than the sum of its proper divisors (39615113).

12320203111 is an equidigital number, since it uses as much as digits as its factorization.

12320203111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39615112.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12320203111 its reverse (11130202321), we get a palindrome (23450405432).

The spelling of 12320203111 in words is "twelve billion, three hundred twenty million, two hundred three thousand, one hundred eleven".