105218210 has 8 divisors (see below), whose sum is σ = 189392796. Its totient is φ = 42087280.

The previous prime is 105218171. The next prime is 105218213. The reversal of 105218210 is 12812501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 88416409 + 16801801 = 9403^2 + 4099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105218210² = 22141743431208200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105218213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5260901 + ... + 5260920.

Almost surely, 2^105218210 is an apocalyptic number.

105218210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105218210 is a deficient number, since it is larger than the sum of its proper divisors (84174586).

105218210 is a wasteful number, since it uses less digits than its factorization.

105218210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521828.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 105218210 is about 10257.5927975330. The cubic root of 105218210 is about 472.0959807923.

The spelling of 105218210 in words is "one hundred five million, two hundred eighteen thousand, two hundred ten".