210207105 has 12 divisors (see below), whose sum is σ = 364359060. Its totient is φ = 112110432.

The previous prime is 210207103. The next prime is 210207119. The reversal of 210207105 is 501702012.

It can be written as a sum of positive squares in 2 ways, for example, as 109746576 + 100460529 = 10476^2 + 10023^2 .

It is not a de Polignac number, because 210207105 - 2¹ = 210207103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210207103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2335590 + ... + 2335679.

It is an arithmetic number, because the mean of its divisors is an integer number (30363255).

Almost surely, 2^210207105 is an apocalyptic number.

It is an amenable number.

210207105 is a deficient number, since it is larger than the sum of its proper divisors (154151955).

210207105 is a wasteful number, since it uses less digits than its factorization.

210207105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671280 (or 4671277 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 210207105 is about 14498.5207866182. The cubic root of 210207105 is about 594.5875304344.

Adding to 210207105 its reverse (501702012), we get a palindrome (711909117).

The spelling of 210207105 in words is "two hundred ten million, two hundred seven thousand, one hundred five".