12012320203 has 8 divisors (see below), whose sum is σ = 13180427568. Its totient is φ = 10879081824.

The previous prime is 12012320191. The next prime is 12012320219. The reversal of 12012320203 is 30202321021.

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

It is not a de Polignac number, because 12012320203 - 2⁹ = 12012319691 is a prime.

It is a super-2 number, since 2×12012320203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012320303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8716525 + ... + 8717902.

It is an arithmetic number, because the mean of its divisors is an integer number (1647553446).

Almost surely, 2^12012320203 is an apocalyptic number.

12012320203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12012320203 is a deficient number, since it is larger than the sum of its proper divisors (1168107365).

12012320203 is a wasteful number, since it uses less digits than its factorization.

12012320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17434493.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12012320203 its reverse (30202321021), we get a palindrome (42214641224).

The spelling of 12012320203 in words is "twelve billion, twelve million, three hundred twenty thousand, two hundred three".