3021222144 has 72 divisors (see below), whose sum is σ = 8086145760. Its totient is φ = 1001402368.

The previous prime is 3021222143. The next prime is 3021222157. The reversal of 3021222144 is 4412221203.

It is a self number, because there is not a number n which added to its sum of digits gives 3021222144.

It is not an unprimeable number, because it can be changed into a prime (3021222143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126484 + ... + 148460.

It is an arithmetic number, because the mean of its divisors is an integer number (112307580).

Almost surely, 2^3021222144 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 3021222144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4043072880).

3021222144 is an abundant number, since it is smaller than the sum of its proper divisors (5064923616).

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

3021222144 is a wasteful number, since it uses less digits than its factorization.

3021222144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22175 (or 22161 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 3021222144 is about 54965.6451249324. The cubic root of 3021222144 is about 1445.6424299852.

Adding to 3021222144 its reverse (4412221203), we get a palindrome (7433443347).

The spelling of 3021222144 in words is "three billion, twenty-one million, two hundred twenty-two thousand, one hundred forty-four".