3301021220 has 72 divisors (see below), whose sum is σ = 8161280064. Its totient is φ = 1118115264.

The previous prime is 3301021187. The next prime is 3301021231. The reversal of 3301021220 is 221201033.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 3301021195 and 3301021204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61049 + ... + 101631.

It is an arithmetic number, because the mean of its divisors is an integer number (113351112).

Almost surely, 2^3301021220 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 3301021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4080640032).

3301021220 is an abundant number, since it is smaller than the sum of its proper divisors (4860258844).

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

3301021220 is a wasteful number, since it uses less digits than its factorization.

3301021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40689 (or 40680 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3301021220 is about 57454.5143570111. The cubic root of 3301021220 is about 1488.9591126709.

Adding to 3301021220 its reverse (221201033), we get a palindrome (3522222253).

The spelling of 3301021220 in words is "three billion, three hundred one million, twenty-one thousand, two hundred twenty".