3221012120 has 16 divisors (see below), whose sum is σ = 7247277360. Its totient is φ = 1288404832.

The previous prime is 3221012101. The next prime is 3221012159. The reversal of 3221012120 is 212101223.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3221012095 and 3221012104.

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, 40262612 + ... + 40262691.

It is an arithmetic number, because the mean of its divisors is an integer number (452954835).

Almost surely, 2^3221012120 is an apocalyptic number.

It is an amenable number.

3221012120 is an abundant number, since it is smaller than the sum of its proper divisors (4026265240).

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

3221012120 is a wasteful number, since it uses less digits than its factorization.

3221012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80525314 (or 80525310 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3221012120 is about 56753.9612714390. The cubic root of 3221012120 is about 1476.8309534859.

Adding to 3221012120 its reverse (212101223), we get a palindrome (3433113343).

The spelling of 3221012120 in words is "three billion, two hundred twenty-one million, twelve thousand, one hundred twenty".