3301121213221 has 8 divisors (see below), whose sum is σ = 3555144952184. Its totient is φ = 3047110522560.

The previous prime is 3301121213219. The next prime is 3301121213237. The reversal of 3301121213221 is 1223121211033.

It can be written as a sum of positive squares in 4 ways, for example, as 4133204100 + 3296988009121 = 64290^2 + 1815761^2 .

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

It is not a de Polignac number, because 3301121213221 - 2¹ = 3301121213219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3301121213192 and 3301121213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3301121213021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2733450 + ... + 3751531.

It is an arithmetic number, because the mean of its divisors is an integer number (444393119023).

Almost surely, 2^{3301121213221} is an apocalyptic number.

It is an amenable number.

3301121213221 is a deficient number, since it is larger than the sum of its proper divisors (254023738963).

3301121213221 is a wasteful number, since it uses less digits than its factorization.

3301121213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524151.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3301121213221 its reverse (1223121211033), we get a palindrome (4524242424254).

The spelling of 3301121213221 in words is "three trillion, three hundred one billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred twenty-one".