12111012209999 has 2 divisors, whose sum is σ = 12111012210000. Its totient is φ = 12111012209998.

The previous prime is 12111012209983. The next prime is 12111012210043. The reversal of 12111012209999 is 99990221011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111012209999 - 2⁴ = 12111012209983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111012209969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055506104999 + 6055506105000.

It is an arithmetic number, because the mean of its divisors is an integer number (6055506105000).

Almost surely, 2^{12111012209999} is an apocalyptic number.

12111012209999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111012209999 is an equidigital number, since it uses as much as digits as its factorization.

12111012209999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 47.

The spelling of 12111012209999 in words is "twelve trillion, one hundred eleven billion, twelve million, two hundred nine thousand, nine hundred ninety-nine".