212307402064266 has 12 divisors (see below), whose sum is σ = 459999371139282. Its totient is φ = 70769134021416.

The previous prime is 212307402064253. The next prime is 212307402064267. The reversal of 212307402064266 is 662460204703212.

212307402064266 is a `hidden beast` number, since 2 + 1 + 2 + 307 + 4 + 0 + 20 + 64 + 266 = 666.

It can be written as a sum of positive squares in only one way, i.e., 134047282138641 + 78260119925625 = 11577879^2 + 8846475^2 .

It is not an unprimeable number, because it can be changed into a prime (212307402064267) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5897427835101 + ... + 5897427835136.

Almost surely, 2^{212307402064266} is an apocalyptic number.

212307402064266 is an abundant number, since it is smaller than the sum of its proper divisors (247691969075016).

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

212307402064266 is a wasteful number, since it uses less digits than its factorization.

212307402064266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11794855670245 (or 11794855670242 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

Adding to 212307402064266 its reverse (662460204703212), we get a palindrome (874767606767478).

The spelling of 212307402064266 in words is "two hundred twelve trillion, three hundred seven billion, four hundred two million, sixty-four thousand, two hundred sixty-six".