1212119999 has 2 divisors, whose sum is σ = 1212120000. Its totient is φ = 1212119998.

The previous prime is 1212119983. The next prime is 1212120011. The reversal of 1212119999 is 9999112121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212119999 - 2⁴ = 1212119983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212119939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606059999 + 606060000.

It is an arithmetic number, because the mean of its divisors is an integer number (606060000).

Almost surely, 2^1212119999 is an apocalyptic number.

1212119999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212119999 is an equidigital number, since it uses as much as digits as its factorization.

1212119999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 44.

The square root of 1212119999 is about 34815.5137690082. The cubic root of 1212119999 is about 1066.2242085599.

The spelling of 1212119999 in words is "one billion, two hundred twelve million, one hundred nineteen thousand, nine hundred ninety-nine".