2120205 has 16 divisors (see below), whose sum is σ = 3426624. Its totient is φ = 1119360.

The previous prime is 2120203. The next prime is 2120207. The reversal of 2120205 is 5020212.

It is an interprime number because it is at equal distance from previous prime (2120203) and next prime (2120207).

It is not a de Polignac number, because 2120205 - 2¹ = 2120203 is a prime.

2120205 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120203) 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, 945 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (214164).

2^2120205 is an apocalyptic number.

It is an amenable number.

2120205 is a deficient number, since it is larger than the sum of its proper divisors (1306419).

2120205 is a wasteful number, since it uses less digits than its factorization.

2120205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

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

The square root of 2120205 is about 1456.0923734434. The cubic root of 2120205 is about 128.4673063530.

Adding to 2120205 its reverse (5020212), we get a palindrome (7140417).

The spelling of 2120205 in words is "two million, one hundred twenty thousand, two hundred five".