3221231213201 has 4 divisors (see below), whose sum is σ = 3222643416804. Its totient is φ = 3219819009600.

The previous prime is 3221231213071. The next prime is 3221231213311. The reversal of 3221231213201 is 1023121321223.

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 775060140625 + 2446171072576 = 880375^2 + 1564024^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221231213201 - 2²⁶ = 3221164104337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221231233201) 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, 706098380 + ... + 706102941.

It is an arithmetic number, because the mean of its divisors is an integer number (805660854201).

Almost surely, 2^{3221231213201} is an apocalyptic number.

It is an amenable number.

3221231213201 is a deficient number, since it is larger than the sum of its proper divisors (1412203603).

3221231213201 is a wasteful number, since it uses less digits than its factorization.

3221231213201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412203602.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 3221231213201 its reverse (1023121321223), we get a palindrome (4244352534424).

The spelling of 3221231213201 in words is "three trillion, two hundred twenty-one billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred one".