2099122509 has 16 divisors (see below), whose sum is σ = 3091921920. Its totient is φ = 1256090160.

The previous prime is 2099122483. The next prime is 2099122511. The reversal of 2099122509 is 9052219902.

It is not a de Polignac number, because 2099122509 - 2⁷ = 2099122381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099122589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399987 + ... + 405200.

It is an arithmetic number, because the mean of its divisors is an integer number (193245120).

Almost surely, 2^2099122509 is an apocalyptic number.

It is an amenable number.

2099122509 is a deficient number, since it is larger than the sum of its proper divisors (992799411).

2099122509 is a wasteful number, since it uses less digits than its factorization.

2099122509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805280.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 2099122509 is about 45816.1817374604. The cubic root of 2099122509 is about 1280.4007755841.

The spelling of 2099122509 in words is "two billion, ninety-nine million, one hundred twenty-two thousand, five hundred nine".