105857212 has 12 divisors (see below), whose sum is σ = 185920840. Its totient is φ = 52736976.

The previous prime is 105857179. The next prime is 105857231. The reversal of 105857212 is 212758501.

It is a super-2 number, since 2×105857212² = 22411498664825888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46662 + ... + 48877.

Almost surely, 2^105857212 is an apocalyptic number.

It is an amenable number.

105857212 is a deficient number, since it is larger than the sum of its proper divisors (80063628).

105857212 is a wasteful number, since it uses less digits than its factorization.

105857212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95820 (or 95818 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 105857212 is about 10288.6934058703. The cubic root of 105857212 is about 473.0497499025.

The spelling of 105857212 in words is "one hundred five million, eight hundred fifty-seven thousand, two hundred twelve".