8712805212 has 18 divisors (see below), whose sum is σ = 22024035488. Its totient is φ = 2904268392.

The previous prime is 8712805207. The next prime is 8712805219. The reversal of 8712805212 is 2125082178.

8712805212 is a `hidden beast` number, since 8 + 7 + 128 + 0 + 521 + 2 = 666.

8712805212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 242022367 = 8712805212 / (8 + 7 + 1 + 2 + 8 + 0 + 5 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8712805219) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 121011148 + ... + 121011219.

Almost surely, 2^8712805212 is an apocalyptic number.

It is an amenable number.

8712805212 is an abundant number, since it is smaller than the sum of its proper divisors (13311230276).

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

8712805212 is a wasteful number, since it uses less digits than its factorization.

8712805212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242022377 (or 242022372 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 8712805212 is about 93342.4084326090. The cubic root of 8712805212 is about 2057.7186870228.

The spelling of 8712805212 in words is "eight billion, seven hundred twelve million, eight hundred five thousand, two hundred twelve".