105210212 has 24 divisors (see below), whose sum is σ = 196368480. Its totient is φ = 49150080.

The previous prime is 105210197. The next prime is 105210221. The reversal of 105210212 is 212012501.

It is a super-2 number, since 2×105210212² = 22138377418169888, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3887 + ... + 15017.

It is an arithmetic number, because the mean of its divisors is an integer number (8182020).

Almost surely, 2^105210212 is an apocalyptic number.

It is an amenable number.

105210212 is a deficient number, since it is larger than the sum of its proper divisors (91158268).

105210212 is a wasteful number, since it uses less digits than its factorization.

105210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291 (or 11289 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 105210212 is about 10257.2029325738. The cubic root of 105210212 is about 472.0840186065.

Adding to 105210212 its reverse (212012501), we get a palindrome (317222713).

The spelling of 105210212 in words is "one hundred five million, two hundred ten thousand, two hundred twelve".