3001220321 has 16 divisors (see below), whose sum is σ = 3300860160. Its totient is φ = 2706113280.

The previous prime is 3001220317. The next prime is 3001220359. The reversal of 3001220321 is 1230221003.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3001220321 - 2² = 3001220317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3001220296 and 3001220305.

It is not an unprimeable number, because it can be changed into a prime (3001210321) 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, 1240505 + ... + 1242921.

It is an arithmetic number, because the mean of its divisors is an integer number (206303760).

Almost surely, 2^3001220321 is an apocalyptic number.

It is an amenable number.

3001220321 is a deficient number, since it is larger than the sum of its proper divisors (299639839).

3001220321 is a wasteful number, since it uses less digits than its factorization.

3001220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3001220321 is about 54783.3945735384. The cubic root of 3001220321 is about 1442.4451001797.

Adding to 3001220321 its reverse (1230221003), we get a palindrome (4231441324).

It can be divided in two parts, 3001 and 220321, that added together give a palindrome (223322).

The spelling of 3001220321 in words is "three billion, one million, two hundred twenty thousand, three hundred twenty-one".