3221253403345 has 16 divisors (see below), whose sum is σ = 3888997152768. Its totient is φ = 2561343426880.

The previous prime is 3221253403343. The next prime is 3221253403363. The reversal of 3221253403345 is 5433043521223.

It is not a de Polignac number, because 3221253403345 - 2¹ = 3221253403343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221253403343) 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 15 ways as a sum of consecutive naturals, for example, 9537552 + ... + 9869518.

It is an arithmetic number, because the mean of its divisors is an integer number (243062322048).

Almost surely, 2^{3221253403345} is an apocalyptic number.

It is an amenable number.

3221253403345 is a deficient number, since it is larger than the sum of its proper divisors (667743749423).

3221253403345 is a wasteful number, since it uses less digits than its factorization.

3221253403345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343760.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 3221253403345 its reverse (5433043521223), we get a palindrome (8654296924568).

The spelling of 3221253403345 in words is "three trillion, two hundred twenty-one billion, two hundred fifty-three million, four hundred three thousand, three hundred forty-five".