2120204005 has 8 divisors (see below), whose sum is σ = 2547232632. Its totient is φ = 1694171328.

The previous prime is 2120204003. The next prime is 2120204033. The reversal of 2120204005 is 5004020212.

It can be written as a sum of positive squares in 4 ways, for example, as 219069601 + 1901134404 = 14801^2 + 43602^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120204005 - 2¹ = 2120204003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120204005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120204003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244294 + ... + 252823.

It is an arithmetic number, because the mean of its divisors is an integer number (318404079).

Almost surely, 2^2120204005 is an apocalyptic number.

It is an amenable number.

2120204005 is a deficient number, since it is larger than the sum of its proper divisors (427028627).

2120204005 is an equidigital number, since it uses as much as digits as its factorization.

2120204005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497975.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2120204005 is about 46045.6730323274. The cubic root of 2120204005 is about 1284.6728625671.

Adding to 2120204005 its reverse (5004020212), we get a palindrome (7124224217).

The spelling of 2120204005 in words is "two billion, one hundred twenty million, two hundred four thousand, five".