851212 has 12 divisors (see below), whose sum is σ = 1497496. Its totient is φ = 423360.

The previous prime is 851209. The next prime is 851231. The reversal of 851212 is 212158.

It is a self number, because there is not a number n which added to its sum of digits gives 851212.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 523 + ... + 1405.

2⁸⁵¹²¹² is an apocalyptic number.

It is an amenable number.

851212 is a deficient number, since it is larger than the sum of its proper divisors (646284).

851212 is a wasteful number, since it uses less digits than its factorization.

851212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1126 counting only the distinct ones).

The product of its digits is 160, while the sum is 19.

The square root of 851212 is about 922.6115108755. The cubic root of 851212 is about 94.7718254384.

The spelling of 851212 in words is "eight hundred fifty-one thousand, two hundred twelve".