3021121224 has 144 divisors (see below), whose sum is σ = 9024238860. Its totient is φ = 912384000.

The previous prime is 3021121223. The next prime is 3021121237. The reversal of 3021121224 is 4221211203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2226896100 + 794225124 = 47190^2 + 28182^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3021121197 and 3021121206.

It is not an unprimeable number, because it can be changed into a prime (3021121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5026524 + ... + 5027124.

Almost surely, 2^3021121224 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 3021121224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4512119430).

3021121224 is an abundant number, since it is smaller than the sum of its proper divisors (6003117636).

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

3021121224 is a wasteful number, since it uses less digits than its factorization.

3021121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3021121224 is about 54964.7270892888. The cubic root of 3021121224 is about 1445.6263332037.

Adding to 3021121224 its reverse (4221211203), we get a palindrome (7242332427).

The spelling of 3021121224 in words is "three billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-four".