3221512120 has 16 divisors (see below), whose sum is σ = 7248402360. Its totient is φ = 1288604832.

The previous prime is 3221512103. The next prime is 3221512127. The reversal of 3221512120 is 212151223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221512127) 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 3 ways as a sum of consecutive naturals, for example, 40268862 + ... + 40268941.

Almost surely, 2^3221512120 is an apocalyptic number.

It is an amenable number.

3221512120 is an abundant number, since it is smaller than the sum of its proper divisors (4026890240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221512120 is a wasteful number, since it uses less digits than its factorization.

3221512120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80537814 (or 80537810 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 3221512120 is about 56758.3660793719. The cubic root of 3221512120 is about 1476.9073660382.

Adding to 3221512120 its reverse (212151223), we get a palindrome (3433663343).

The spelling of 3221512120 in words is "three billion, two hundred twenty-one million, five hundred twelve thousand, one hundred twenty".