3213021331321 has 4 divisors (see below), whose sum is σ = 3382127717200. Its totient is φ = 3043914945444.

The previous prime is 3213021331313. The next prime is 3213021331363. The reversal of 3213021331321 is 1231331203123.

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 not a de Polignac number, because 3213021331321 - 2³ = 3213021331313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3213021331381) 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, 84553192911 + ... + 84553192948.

It is an arithmetic number, because the mean of its divisors is an integer number (845531929300).

Almost surely, 2^{3213021331321} is an apocalyptic number.

It is an amenable number.

3213021331321 is a deficient number, since it is larger than the sum of its proper divisors (169106385879).

3213021331321 is a wasteful number, since it uses less digits than its factorization.

3213021331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169106385878.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 3213021331321 its reverse (1231331203123), we get a palindrome (4444352534444).

The spelling of 3213021331321 in words is "three trillion, two hundred thirteen billion, twenty-one million, three hundred thirty-one thousand, three hundred twenty-one".