12012221203 has 4 divisors (see below), whose sum is σ = 12078587248. Its totient is φ = 11945855160.

The previous prime is 12012221197. The next prime is 12012221227. The reversal of 12012221203 is 30212221021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12012221203 - 2²¹ = 12010124051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012221303) 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, 33182751 + ... + 33183112.

It is an arithmetic number, because the mean of its divisors is an integer number (3019646812).

Almost surely, 2^12012221203 is an apocalyptic number.

12012221203 is a deficient number, since it is larger than the sum of its proper divisors (66366045).

12012221203 is an equidigital number, since it uses as much as digits as its factorization.

12012221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66366044.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12012221203 its reverse (30212221021), we get a palindrome (42224442224).

The spelling of 12012221203 in words is "twelve billion, twelve million, two hundred twenty-one thousand, two hundred three".