3221404521 has 8 divisors (see below), whose sum is σ = 4299304800. Its totient is φ = 2145553632.

The previous prime is 3221404499. The next prime is 3221404577. The reversal of 3221404521 is 1254041223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3221404521 - 2¹³ = 3221396329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3221404491 and 3221404500.

It is not an unprimeable number, because it can be changed into a prime (3221400521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508675 + ... + 514968.

It is an arithmetic number, because the mean of its divisors is an integer number (537413100).

Almost surely, 2^3221404521 is an apocalyptic number.

It is an amenable number.

3221404521 is a deficient number, since it is larger than the sum of its proper divisors (1077900279).

3221404521 is a wasteful number, since it uses less digits than its factorization.

3221404521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024695.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 3221404521 is about 56757.4182023813. The cubic root of 3221404521 is about 1476.8909228775.

Adding to 3221404521 its reverse (1254041223), we get a palindrome (4475445744).

The spelling of 3221404521 in words is "three billion, two hundred twenty-one million, four hundred four thousand, five hundred twenty-one".