2021144224 has 24 divisors (see below), whose sum is σ = 4340867328. Its totient is φ = 918701760.

The previous prime is 2021144219. The next prime is 2021144227. The reversal of 2021144224 is 4224411202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2021144195 and 2021144204.

It is not an unprimeable number, because it can be changed into a prime (2021144227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870592 + ... + 2871295.

It is an arithmetic number, because the mean of its divisors is an integer number (180869472).

Almost surely, 2^2021144224 is an apocalyptic number.

It is an amenable number.

2021144224 is an abundant number, since it is smaller than the sum of its proper divisors (2319723104).

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

2021144224 is a wasteful number, since it uses less digits than its factorization.

2021144224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741908 (or 5741900 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 2021144224 is about 44957.1376313039. The cubic root of 2021144224 is about 1264.3455032118.

Adding to 2021144224 its reverse (4224411202), we get a palindrome (6245555426).

The spelling of 2021144224 in words is "two billion, twenty-one million, one hundred forty-four thousand, two hundred twenty-four".