2012199966 has 48 divisors (see below), whose sum is σ = 5030997504. Its totient is φ = 569328912.

The previous prime is 2012199947. The next prime is 2012199977. The reversal of 2012199966 is 6699912102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64546 + ... + 90501.

It is an arithmetic number, because the mean of its divisors is an integer number (104812448).

Almost surely, 2^2012199966 is an apocalyptic number.

2012199966 is an abundant number, since it is smaller than the sum of its proper divisors (3018797538).

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

2012199966 is a wasteful number, since it uses less digits than its factorization.

2012199966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155165 (or 155162 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 2012199966 is about 44857.5519394449. The cubic root of 2012199966 is about 1262.4776907602.

The spelling of 2012199966 in words is "two billion, twelve million, one hundred ninety-nine thousand, nine hundred sixty-six".