4241240221 has 2 divisors, whose sum is σ = 4241240222. Its totient is φ = 4241240220.

The previous prime is 4241240183. The next prime is 4241240251. The reversal of 4241240221 is 1220421424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3706983225 + 534256996 = 60885^2 + 23114^2 .

It is a cyclic number.

It is not a de Polignac number, because 4241240221 - 2⁷ = 4241240093 is a prime.

It is a super-2 number, since 2×4241240221² = 35976237224456257682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4241240192 and 4241240201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4241240251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120620110 + 2120620111.

It is an arithmetic number, because the mean of its divisors is an integer number (2120620111).

Almost surely, 2^4241240221 is an apocalyptic number.

It is an amenable number.

4241240221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4241240221 is an equidigital number, since it uses as much as digits as its factorization.

4241240221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4241240221 is about 65124.8049594008. The cubic root of 4241240221 is about 1618.6922613117.

Adding to 4241240221 its reverse (1220421424), we get a palindrome (5461661645).

The spelling of 4241240221 in words is "four billion, two hundred forty-one million, two hundred forty thousand, two hundred twenty-one".