212043666116 has 12 divisors (see below), whose sum is σ = 372011119788. Its totient is φ = 105754774752.

The previous prime is 212043666073. The next prime is 212043666157. The reversal of 212043666116 is 611666340212.

It can be written as a sum of positive squares in 2 ways, for example, as 64206492100 + 147837174016 = 253390^2 + 384496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212043666116.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66762791 + ... + 66765966.

It is an arithmetic number, because the mean of its divisors is an integer number (31000926649).

Almost surely, 2^212043666116 is an apocalyptic number.

It is an amenable number.

212043666116 is a deficient number, since it is larger than the sum of its proper divisors (159967453672).

212043666116 is a wasteful number, since it uses less digits than its factorization.

212043666116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133529158 (or 133529156 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 212043666116 in words is "two hundred twelve billion, forty-three million, six hundred sixty-six thousand, one hundred sixteen".