3378240221621 has 8 divisors (see below), whose sum is σ = 3400444200384. Its totient is φ = 3356059755040.

The previous prime is 3378240221593. The next prime is 3378240221623. The reversal of 3378240221621 is 1261220428733.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3378240221621 is a prime.

It is a super-2 number, since 2×3378240221621² (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 (3378240221623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5589695 + ... + 6164508.

It is an arithmetic number, because the mean of its divisors is an integer number (425055525048).

Almost surely, 2^{3378240221621} is an apocalyptic number.

It is an amenable number.

3378240221621 is a deficient number, since it is larger than the sum of its proper divisors (22203978763).

3378240221621 is a wasteful number, since it uses less digits than its factorization.

3378240221621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11756091.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 3378240221621 in words is "three trillion, three hundred seventy-eight billion, two hundred forty million, two hundred twenty-one thousand, six hundred twenty-one".