1212112219999 has 2 divisors, whose sum is σ = 1212112220000. Its totient is φ = 1212112219998.

The previous prime is 1212112219963. The next prime is 1212112220063. The reversal of 1212112219999 is 9999122112121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212112219999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212112219909) 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 as a sum of consecutive naturals, namely, 606056109999 + 606056110000.

It is an arithmetic number, because the mean of its divisors is an integer number (606056110000).

Almost surely, 2^{1212112219999} is an apocalyptic number.

1212112219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212112219999 is an equidigital number, since it uses as much as digits as its factorization.

1212112219999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 49.

The spelling of 1212112219999 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred nineteen thousand, nine hundred ninety-nine".