1212212112199 has 12 divisors (see below), whose sum is σ = 1345367737168. Its totient is φ = 1091311863840.

The previous prime is 1212212112193. The next prime is 1212212112269. The reversal of 1212212112199 is 9912112122121.

It is a happy number.

It is not a de Polignac number, because 1212212112199 - 2³ = 1212212112191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212212112191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48619974 + ... + 48644899.

Almost surely, 2^{1212212112199} is an apocalyptic number.

1212212112199 is a deficient number, since it is larger than the sum of its proper divisors (133155624969).

1212212112199 is a wasteful number, since it uses less digits than its factorization.

1212212112199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97264998 (or 97264987 counting only the distinct ones).

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

The spelling of 1212212112199 in words is "one trillion, two hundred twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred ninety-nine".