105212170 has 16 divisors (see below), whose sum is σ = 216436608. Its totient is φ = 36072720.

The previous prime is 105212147. The next prime is 105212183. The reversal of 105212170 is 71212501.

It is a super-2 number, since 2×105212170² = 22139201432217800, 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, 751446 + ... + 751585.

It is an arithmetic number, because the mean of its divisors is an integer number (13527288).

Almost surely, 2^105212170 is an apocalyptic number.

105212170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105212170 is an abundant number, since it is smaller than the sum of its proper divisors (111224438).

105212170 is a wasteful number, since it uses less digits than its factorization.

105212170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503045.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 105212170 is about 10257.2983772531. The cubic root of 105212170 is about 472.0869471396.

Adding to 105212170 its reverse (71212501), we get a palindrome (176424671).

The spelling of 105212170 in words is "one hundred five million, two hundred twelve thousand, one hundred seventy".