2122009999 has 2 divisors, whose sum is σ = 2122010000. Its totient is φ = 2122009998.

The previous prime is 2122009993. The next prime is 2122010029. The reversal of 2122009999 is 9999002212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122009999 - 2³ = 2122009991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122009991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061004999 + 1061005000.

It is an arithmetic number, because the mean of its divisors is an integer number (1061005000).

Almost surely, 2^2122009999 is an apocalyptic number.

2122009999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122009999 is an equidigital number, since it uses as much as digits as its factorization.

2122009999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 2122009999 is about 46065.2797560158. The cubic root of 2122009999 is about 1285.0375213498.

The spelling of 2122009999 in words is "two billion, one hundred twenty-two million, nine thousand, nine hundred ninety-nine".