3220005340621 has 4 divisors (see below), whose sum is σ = 3222480365244. Its totient is φ = 3217530316000.

The previous prime is 3220005340613. The next prime is 3220005340667. The reversal of 3220005340621 is 1260435000223.

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 366980312521 + 2853025028100 = 605789^2 + 1689090^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220005340621 - 2³ = 3220005340613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3220005340621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220005340691) 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, 1237510360 + ... + 1237512961.

It is an arithmetic number, because the mean of its divisors is an integer number (805620091311).

Almost surely, 2^{3220005340621} is an apocalyptic number.

It is an amenable number.

3220005340621 is a deficient number, since it is larger than the sum of its proper divisors (2475024623).

3220005340621 is a wasteful number, since it uses less digits than its factorization.

3220005340621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475024622.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 3220005340621 in words is "three trillion, two hundred twenty billion, five million, three hundred forty thousand, six hundred twenty-one".