3001321122221 has 4 divisors (see below), whose sum is σ = 3001338470844. Its totient is φ = 3001303773600.

The previous prime is 3001321122209. The next prime is 3001321122227. The reversal of 3001321122221 is 1222211231003.

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 1175025648196 + 1826295474025 = 1083986^2 + 1351405^2 .

It is a cyclic number.

It is not a de Polignac number, because 3001321122221 - 2³⁸ = 2726443215277 is a prime.

It is a super-3 number, since 3×3001321122221³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3001321122193 and 3001321122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001321122227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8412170 + ... + 8761691.

It is an arithmetic number, because the mean of its divisors is an integer number (750334617711).

Almost surely, 2^{3001321122221} is an apocalyptic number.

It is an amenable number.

3001321122221 is a deficient number, since it is larger than the sum of its proper divisors (17348623).

3001321122221 is a wasteful number, since it uses less digits than its factorization.

3001321122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17348622.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3001321122221 its reverse (1222211231003), we get a palindrome (4223532353224).

The spelling of 3001321122221 in words is "three trillion, one billion, three hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".