3231221120 has 32 divisors (see below), whose sum is σ = 7724639520. Its totient is φ = 1292488192.

The previous prime is 3231221113. The next prime is 3231221131. The reversal of 3231221120 is 211221323.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523752 + ... + 2525031.

It is an arithmetic number, because the mean of its divisors is an integer number (241394985).

Almost surely, 2^3231221120 is an apocalyptic number.

It is an amenable number.

3231221120 is an abundant number, since it is smaller than the sum of its proper divisors (4493418400).

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

3231221120 is an equidigital number, since it uses as much as digits as its factorization.

3231221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5048802 (or 5048790 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3231221120 is about 56843.8309757532. The cubic root of 3231221120 is about 1478.3895801756.

Adding to 3231221120 its reverse (211221323), we get a palindrome (3442442443).

The spelling of 3231221120 in words is "three billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred twenty".