2012211999966 has 32 divisors (see below), whose sum is σ = 4599701123328. Its totient is φ = 574872788160.

The previous prime is 2012211999961. The next prime is 2012211999997. The reversal of 2012211999966 is 6699991122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012211999961) 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, 1326180 + ... + 2404823.

It is an arithmetic number, because the mean of its divisors is an integer number (143740660104).

Almost surely, 2^{2012211999966} is an apocalyptic number.

2012211999966 is an abundant number, since it is smaller than the sum of its proper divisors (2587489123362).

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

2012211999966 is a wasteful number, since it uses less digits than its factorization.

2012211999966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743856.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The spelling of 2012211999966 in words is "two trillion, twelve billion, two hundred eleven million, nine hundred ninety-nine thousand, nine hundred sixty-six".