3001220405 has 16 divisors (see below), whose sum is σ = 3700654320. Its totient is φ = 2334915072.

The previous prime is 3001220401. The next prime is 3001220407. The reversal of 3001220405 is 5040221003.

It can be written as a sum of positive squares in 8 ways, for example, as 328950769 + 2672269636 = 18137^2 + 51694^2 .

It is a cyclic number.

It is not a de Polignac number, because 3001220405 - 2² = 3001220401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001220401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650567 + ... + 655163.

It is an arithmetic number, because the mean of its divisors is an integer number (231290895).

Almost surely, 2^3001220405 is an apocalyptic number.

It is an amenable number.

3001220405 is a deficient number, since it is larger than the sum of its proper divisors (699433915).

3001220405 is a wasteful number, since it uses less digits than its factorization.

3001220405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8168.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3001220405 is about 54783.3953401941. The cubic root of 3001220405 is about 1442.4451136370.

Adding to 3001220405 its reverse (5040221003), we get a palindrome (8041441408).

The spelling of 3001220405 in words is "three billion, one million, two hundred twenty thousand, four hundred five".