212066560665712 has 80 divisors (see below), whose sum is σ = 413721987374880. Its totient is φ = 105301038617600.

The previous prime is 212066560665697. The next prime is 212066560665787. The reversal of 212066560665712 is 217566065660212.

It is a happy number.

It is a super-2 number, since 2×212066560665712² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15334909614 + ... + 15334923442.

It is an arithmetic number, because the mean of its divisors is an integer number (5171524842186).

Almost surely, 2^{212066560665712} is an apocalyptic number.

It is an amenable number.

212066560665712 is a deficient number, since it is larger than the sum of its proper divisors (201655426709168).

212066560665712 is a wasteful number, since it uses less digits than its factorization.

212066560665712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19882 (or 19876 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 212066560665712 in words is "two hundred twelve trillion, sixty-six billion, five hundred sixty million, six hundred sixty-five thousand, seven hundred twelve".