12111212122099 has 2 divisors, whose sum is σ = 12111212122100. Its totient is φ = 12111212122098.

The previous prime is 12111212122049. The next prime is 12111212122103. The reversal of 12111212122099 is 99022121211121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111212122099 - 2³³ = 12102622187507 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111212122049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055606061049 + 6055606061050.

It is an arithmetic number, because the mean of its divisors is an integer number (6055606061050).

Almost surely, 2^{12111212122099} is an apocalyptic number.

12111212122099 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111212122099 is an equidigital number, since it uses as much as digits as its factorization.

12111212122099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 12111212122099 in words is "twelve trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, ninety-nine".