2244021 has 16 divisors (see below), whose sum is σ = 3251136. Its totient is φ = 1368576.

The previous prime is 2243987. The next prime is 2244091. The reversal of 2244021 is 1204422.

2244021 is a nontrivial binomial coefficient, being equal to C(2119, 2).

It is not a de Polignac number, because 2244021 - 2⁷ = 2243893 is a prime.

2244021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2244091) 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, 6181 + ... + 6533.

It is an arithmetic number, because the mean of its divisors is an integer number (203196).

2^2244021 is an apocalyptic number.

2244021 is the 2118-th triangular number.

It is an amenable number.

2244021 is a deficient number, since it is larger than the sum of its proper divisors (1007115).

2244021 is a wasteful number, since it uses less digits than its factorization.

2244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2244021 is about 1498.0056742216. The cubic root of 2244021 is about 130.9208970220.

Adding to 2244021 its reverse (1204422), we get a palindrome (3448443).

The spelling of 2244021 in words is "two million, two hundred forty-four thousand, twenty-one".