212980794266 has 4 divisors (see below), whose sum is σ = 319471191402. Its totient is φ = 106490397132.

The previous prime is 212980794239. The next prime is 212980794277. The reversal of 212980794266 is 662497089212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 209722782025 + 3258012241 = 457955^2 + 57079^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53245198565 + ... + 53245198568.

Almost surely, 2^212980794266 is an apocalyptic number.

212980794266 is a deficient number, since it is larger than the sum of its proper divisors (106490397136).

212980794266 is a wasteful number, since it uses less digits than its factorization.

212980794266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106490397135.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 212980794266 in words is "two hundred twelve billion, nine hundred eighty million, seven hundred ninety-four thousand, two hundred sixty-six".