201244321 has 2 divisors, whose sum is σ = 201244322. Its totient is φ = 201244320.

The previous prime is 201244301. The next prime is 201244367. The reversal of 201244321 is 123442102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193515921 + 7728400 = 13911^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 201244321 - 2¹¹ = 201242273 is a prime.

It is equal to p_11144062 and since 201244321 and 11144062 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (201244301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100622160 + 100622161.

It is an arithmetic number, because the mean of its divisors is an integer number (100622161).

Almost surely, 2^201244321 is an apocalyptic number.

It is an amenable number.

201244321 is a deficient number, since it is larger than the sum of its proper divisors (1).

201244321 is an equidigital number, since it uses as much as digits as its factorization.

201244321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 201244321 is about 14186.0607992494. The cubic root of 201244321 is about 586.0138466600.

Adding to 201244321 its reverse (123442102), we get a palindrome (324686423).

The spelling of 201244321 in words is "two hundred one million, two hundred forty-four thousand, three hundred twenty-one".