3320121310021 has 4 divisors (see below), whose sum is σ = 3320250057612. Its totient is φ = 3319992562432.

The previous prime is 3320121310013. The next prime is 3320121310031. The reversal of 3320121310021 is 1200131210233.

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 1181653787521 + 2138467522500 = 1087039^2 + 1462350^2 .

It is a cyclic number.

It is not a de Polignac number, because 3320121310021 - 2³ = 3320121310013 is a prime.

It is a super-2 number, since 2×3320121310021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3320121310031) 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 3 ways as a sum of consecutive naturals, for example, 64335106 + ... + 64386691.

It is an arithmetic number, because the mean of its divisors is an integer number (830062514403).

Almost surely, 2^{3320121310021} is an apocalyptic number.

It is an amenable number.

3320121310021 is a deficient number, since it is larger than the sum of its proper divisors (128747591).

3320121310021 is a wasteful number, since it uses less digits than its factorization.

3320121310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128747590.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3320121310021 its reverse (1200131210233), we get a palindrome (4520252520254).

The spelling of 3320121310021 in words is "three trillion, three hundred twenty billion, one hundred twenty-one million, three hundred ten thousand, twenty-one".