3220021002221 has 4 divisors (see below), whose sum is σ = 3223651240992. Its totient is φ = 3216390763452.

The previous prime is 3220021002131. The next prime is 3220021002241. The reversal of 3220021002221 is 1222001200223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3220021002221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3220021002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220021002241) 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, 1815118055 + ... + 1815119828.

It is an arithmetic number, because the mean of its divisors is an integer number (805912810248).

Almost surely, 2^{3220021002221} is an apocalyptic number.

It is an amenable number.

3220021002221 is a deficient number, since it is larger than the sum of its proper divisors (3630238771).

3220021002221 is an equidigital number, since it uses as much as digits as its factorization.

3220021002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630238770.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 3220021002221 its reverse (1222001200223), we get a palindrome (4442022202444).

The spelling of 3220021002221 in words is "three trillion, two hundred twenty billion, twenty-one million, two thousand, two hundred twenty-one".