2099866212 has 18 divisors (see below), whose sum is σ = 5307995238. Its totient is φ = 699955392.

The previous prime is 2099866211. The next prime is 2099866273. The reversal of 2099866212 is 2126689902.

It can be written as a sum of positive squares in only one way, i.e., 1950635556 + 149230656 = 44166^2 + 12216^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (2099866211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29164773 + ... + 29164844.

Almost surely, 2^2099866212 is an apocalyptic number.

It is an amenable number.

2099866212 is an abundant number, since it is smaller than the sum of its proper divisors (3208129026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2099866212 is a wasteful number, since it uses less digits than its factorization.

2099866212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58329627 (or 58329622 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2099866212 is about 45824.2971795531. The cubic root of 2099866212 is about 1280.5519697869.

The spelling of 2099866212 in words is "two billion, ninety-nine million, eight hundred sixty-six thousand, two hundred twelve".