3531221012 has 24 divisors (see below), whose sum is σ = 6781803840. Its totient is φ = 1595485760.

The previous prime is 3531220999. The next prime is 3531221039. The reversal of 3531221012 is 2101221353.

It is a congruent number.

It is an unprimeable number.

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, 232937 + ... + 247632.

It is an arithmetic number, because the mean of its divisors is an integer number (282575160).

Almost surely, 2^3531221012 is an apocalyptic number.

It is an amenable number.

3531221012 is a deficient number, since it is larger than the sum of its proper divisors (3250582828).

3531221012 is a wasteful number, since it uses less digits than its factorization.

3531221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480751 (or 480749 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 3531221012 is about 59424.0777126579. The cubic root of 3531221012 is about 1522.7956703351.

Adding to 3531221012 its reverse (2101221353), we get a palindrome (5632442365).

The spelling of 3531221012 in words is "three billion, five hundred thirty-one million, two hundred twenty-one thousand, twelve".