20110205 has 4 divisors (see below), whose sum is σ = 24132252. Its totient is φ = 16088160.

The previous prime is 20110183. The next prime is 20110217. The reversal of 20110205 is 50201102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14417209 + 5692996 = 3797^2 + 2386^2 .

It is not a de Polignac number, because 20110205 - 2⁶ = 20110141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011016 + ... + 2011025.

It is an arithmetic number, because the mean of its divisors is an integer number (6033063).

Almost surely, 2^20110205 is an apocalyptic number.

It is an amenable number.

20110205 is a deficient number, since it is larger than the sum of its proper divisors (4022047).

20110205 is an equidigital number, since it uses as much as digits as its factorization.

20110205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022046.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 20110205 is about 4484.4403218239. The cubic root of 20110205 is about 271.9394193586.

Adding to 20110205 its reverse (50201102), we get a palindrome (70311307).

The spelling of 20110205 in words is "twenty million, one hundred ten thousand, two hundred five".