3213223303021 has 4 divisors (see below), whose sum is σ = 3220644142492. Its totient is φ = 3205802463552.

The previous prime is 3213223302959. The next prime is 3213223303027. The reversal of 3213223303021 is 1203033223123.

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 764905918921 + 2448317384100 = 874589^2 + 1564710^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213223303021 - 2³³ = 3204633368429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213223303027) 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, 3710419086 + ... + 3710419951.

It is an arithmetic number, because the mean of its divisors is an integer number (805161035623).

Almost surely, 2^{3213223303021} is an apocalyptic number.

It is an amenable number.

3213223303021 is a deficient number, since it is larger than the sum of its proper divisors (7420839471).

3213223303021 is an equidigital number, since it uses as much as digits as its factorization.

3213223303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7420839470.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 3213223303021 its reverse (1203033223123), we get a palindrome (4416256526144).

The spelling of 3213223303021 in words is "three trillion, two hundred thirteen billion, two hundred twenty-three million, three hundred three thousand, twenty-one".