12111211001203 has 2 divisors, whose sum is σ = 12111211001204. Its totient is φ = 12111211001202.

The previous prime is 12111211001173. The next prime is 12111211001249. The reversal of 12111211001203 is 30210011211121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111211001203 - 2⁵ = 12111211001171 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111211001273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055605500601 + 6055605500602.

It is an arithmetic number, because the mean of its divisors is an integer number (6055605500602).

Almost surely, 2^{12111211001203} is an apocalyptic number.

12111211001203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111211001203 is an equidigital number, since it uses as much as digits as its factorization.

12111211001203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12111211001203 its reverse (30210011211121), we get a palindrome (42321222212324).

The spelling of 12111211001203 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, one thousand, two hundred three".