244021 has 2 divisors, whose sum is σ = 244022. Its totient is φ = 244020.

The previous prime is 244009. The next prime is 244033. The reversal of 244021 is 120442.

It is a balanced prime because it is at equal distance from previous prime (244009) and next prime (244033).

It can be written as a sum of positive squares in only one way, i.e., 239121 + 4900 = 489^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 244021 - 2⁵ = 243989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243992 and 244010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122010 + 122011.

It is an arithmetic number, because the mean of its divisors is an integer number (122011).

2²⁴⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

244021 is a deficient number, since it is larger than the sum of its proper divisors (1).

244021 is an equidigital number, since it uses as much as digits as its factorization.

244021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 244021 is about 493.9848175805. The cubic root of 244021 is about 62.4897903323.

Adding to 244021 its reverse (120442), we get a palindrome (364463).

The spelling of 244021 in words is "two hundred forty-four thousand, twenty-one", and thus it is an iban number.