3021221120 has 144 divisors (see below), whose sum is σ = 7738682112. Its totient is φ = 1127301120.

The previous prime is 3021221117. The next prime is 3021221123. The reversal of 3021221120 is 211221203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3021221117) and next prime (3021221123).

It is a junction number, because it is equal to n+sod(n) for n = 3021221095 and 3021221104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021221123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205789 + ... + 1208291.

It is an arithmetic number, because the mean of its divisors is an integer number (53740848).

Almost surely, 2^3021221120 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 3021221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3869341056).

3021221120 is an abundant number, since it is smaller than the sum of its proper divisors (4717460992).

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

3021221120 is a wasteful number, since it uses less digits than its factorization.

3021221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588 (or 2574 counting only the distinct ones).

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

The square root of 3021221120 is about 54965.6358100222. The cubic root of 3021221120 is about 1445.6422666586.

Adding to 3021221120 its reverse (211221203), we get a palindrome (3232442323).

The spelling of 3021221120 in words is "three billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty".