2133205 has 4 divisors (see below), whose sum is σ = 2559852. Its totient is φ = 1706560.

The previous prime is 2133191. The next prime is 2133217. The reversal of 2133205 is 5023312.

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 321489 + 1811716 = 567^2 + 1346^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2133205 is a prime.

It is an Ulam number.

It is a Duffinian number.

2133205 is a lucky number.

It is a plaindrome in base 11.

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, 213316 + ... + 213325.

It is an arithmetic number, because the mean of its divisors is an integer number (639963).

2^2133205 is an apocalyptic number.

It is an amenable number.

2133205 is a deficient number, since it is larger than the sum of its proper divisors (426647).

2133205 is an equidigital number, since it uses as much as digits as its factorization.

2133205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426646.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 2133205 is about 1460.5495541063. The cubic root of 2133205 is about 128.7293365525.

Adding to 2133205 its reverse (5023312), we get a palindrome (7156517).

The spelling of 2133205 in words is "two million, one hundred thirty-three thousand, two hundred five".