3220221320201 has 4 divisors (see below), whose sum is σ = 3223375308804. Its totient is φ = 3217067331600.

The previous prime is 3220221320167. The next prime is 3220221320213. The reversal of 3220221320201 is 1020231220223.

It is a happy number.

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 763867260025 + 2456354060176 = 873995^2 + 1567276^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220221320201 - 2⁶ = 3220221320137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220221320291) 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, 1576992770 + ... + 1576994811.

It is an arithmetic number, because the mean of its divisors is an integer number (805843827201).

Almost surely, 2^{3220221320201} is an apocalyptic number.

It is an amenable number.

3220221320201 is a deficient number, since it is larger than the sum of its proper divisors (3153988603).

3220221320201 is a wasteful number, since it uses less digits than its factorization.

3220221320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153988602.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 3220221320201 its reverse (1020231220223), we get a palindrome (4240452540424).

The spelling of 3220221320201 in words is "three trillion, two hundred twenty billion, two hundred twenty-one million, three hundred twenty thousand, two hundred one".