12011212212203 has 4 divisors (see below), whose sum is σ = 12011219242968. Its totient is φ = 12011205181440.

The previous prime is 12011212212193. The next prime is 12011212212227. The reversal of 12011212212203 is 30221221211021.

12011212212203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12011212212203 - 2⁴ = 12011212212187 is a prime.

It is a super-2 number, since 2×12011212212203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011212242203) 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, 874475 + ... + 4978667.

It is an arithmetic number, because the mean of its divisors is an integer number (3002804810742).

Almost surely, 2^{12011212212203} is an apocalyptic number.

12011212212203 is a deficient number, since it is larger than the sum of its proper divisors (7030765).

12011212212203 is an equidigital number, since it uses as much as digits as its factorization.

12011212212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7030764.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12011212212203 its reverse (30221221211021), we get a palindrome (42232433423224).

The spelling of 12011212212203 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred twelve thousand, two hundred three".