2102205 has 16 divisors (see below), whose sum is σ = 3844224. Its totient is φ = 960960.

The previous prime is 2102201. The next prime is 2102207. The reversal of 2102205 is 5022012.

It is not a de Polignac number, because 2102205 - 2² = 2102201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9906 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (240264).

2^2102205 is an apocalyptic number.

It is an amenable number.

2102205 is a deficient number, since it is larger than the sum of its proper divisors (1742019).

2102205 is a wasteful number, since it uses less digits than its factorization.

2102205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20036.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 2102205 is about 1449.8982722936. The cubic root of 2102205 is about 128.1027210916.

Adding to 2102205 its reverse (5022012), we get a palindrome (7124217).

It can be divided in two parts, 210 and 2205, that added together give a triangular number (2415 = T₆₉).

The spelling of 2102205 in words is "two million, one hundred two thousand, two hundred five".