3312111220 has 72 divisors (see below), whose sum is σ = 7658808192. Its totient is φ = 1202266560.

The previous prime is 3312111211. The next prime is 3312111223. The reversal of 3312111220 is 221112133.

It is a junction number, because it is equal to n+sod(n) for n = 3312111194 and 3312111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3312111223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2145769 + ... + 2147311.

It is an arithmetic number, because the mean of its divisors is an integer number (106372336).

Almost surely, 2^3312111220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3312111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3829404096).

3312111220 is an abundant number, since it is smaller than the sum of its proper divisors (4346696972).

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

3312111220 is a wasteful number, since it uses less digits than its factorization.

3312111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2448 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3312111220 is about 57550.9445621877. The cubic root of 3312111220 is about 1490.6246678855.

Adding to 3312111220 its reverse (221112133), we get a palindrome (3533223353).

The spelling of 3312111220 in words is "three billion, three hundred twelve million, one hundred eleven thousand, two hundred twenty".