212080066 has 16 divisors (see below), whose sum is σ = 367454880. Its totient is φ = 90729280.

The previous prime is 212080061. The next prime is 212080067. The reversal of 212080066 is 660080212.

It is a self number, because there is not a number n which added to its sum of digits gives 212080066.

It is not an unprimeable number, because it can be changed into a prime (212080061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283156 + ... + 283903.

It is an arithmetic number, because the mean of its divisors is an integer number (22965930).

Almost surely, 2^212080066 is an apocalyptic number.

212080066 is a deficient number, since it is larger than the sum of its proper divisors (155374814).

212080066 is a wasteful number, since it uses less digits than its factorization.

212080066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567089.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 212080066 is about 14562.9689967396. The cubic root of 212080066 is about 596.3482511216.

The spelling of 212080066 in words is "two hundred twelve million, eighty thousand, sixty-six".