2021144 has 16 divisors (see below), whose sum is σ = 3989400. Its totient is φ = 957312.

The previous prime is 2021143. The next prime is 2021167. The reversal of 2021144 is 4411202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021143) 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, 6497 + ... + 6800.

2^2021144 is an apocalyptic number.

It is an amenable number.

2021144 is a deficient number, since it is larger than the sum of its proper divisors (1968256).

2021144 is a wasteful number, since it uses less digits than its factorization.

2021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13322 (or 13318 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2021144 is about 1421.6694411853. The cubic root of 2021144 is about 126.4345456503.

Adding to 2021144 its reverse (4411202), we get a palindrome (6432346).

The spelling of 2021144 in words is "two million, twenty-one thousand, one hundred forty-four".