3312213521 has 4 divisors (see below), whose sum is σ = 3352119792. Its totient is φ = 3272307252.

The previous prime is 3312213391. The next prime is 3312213557. The reversal of 3312213521 is 1253122133.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1253122133 = 23 ⋅54483571.

It is a cyclic number.

It is not a de Polignac number, because 3312213521 - 2¹⁴ = 3312197137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3312213571) 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, 19953011 + ... + 19953176.

It is an arithmetic number, because the mean of its divisors is an integer number (838029948).

Almost surely, 2^3312213521 is an apocalyptic number.

It is an amenable number.

3312213521 is a deficient number, since it is larger than the sum of its proper divisors (39906271).

3312213521 is an equidigital number, since it uses as much as digits as its factorization.

3312213521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39906270.

The product of its digits is 1080, while the sum is 23.

The square root of 3312213521 is about 57551.8333417798. The cubic root of 3312213521 is about 1490.6400146753.

Adding to 3312213521 its reverse (1253122133), we get a palindrome (4565335654).

The spelling of 3312213521 in words is "three billion, three hundred twelve million, two hundred thirteen thousand, five hundred twenty-one".