12012310203 has 4 divisors (see below), whose sum is σ = 16016413608. Its totient is φ = 8008206800.

The previous prime is 12012310199. The next prime is 12012310217. The reversal of 12012310203 is 30201321021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30201321021 = 3 ⋅10067107007.

It is a cyclic number.

It is not a de Polignac number, because 12012310203 - 2² = 12012310199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012310253) 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 3 ways as a sum of consecutive naturals, for example, 2002051698 + ... + 2002051703.

It is an arithmetic number, because the mean of its divisors is an integer number (4004103402).

Almost surely, 2^12012310203 is an apocalyptic number.

12012310203 is a deficient number, since it is larger than the sum of its proper divisors (4004103405).

12012310203 is an equidigital number, since it uses as much as digits as its factorization.

12012310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004103404.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12012310203 its reverse (30201321021), we get a palindrome (42213631224).

The spelling of 12012310203 in words is "twelve billion, twelve million, three hundred ten thousand, two hundred three".