442440400220201 has 2 divisors, whose sum is σ = 442440400220202. Its totient is φ = 442440400220200.

The previous prime is 442440400220197. The next prime is 442440400220267. The reversal of 442440400220201 is 102022004044244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 363082163731225 + 79358236488976 = 19054715^2 + 8908324^2 .

It is a cyclic number.

It is not a de Polignac number, because 442440400220201 - 2² = 442440400220197 is a prime.

It is not a weakly prime, because it can be changed into another prime (442440400222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221220200110100 + 221220200110101.

It is an arithmetic number, because the mean of its divisors is an integer number (221220200110101).

Almost surely, 2^{442440400220201} is an apocalyptic number.

It is an amenable number.

442440400220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

442440400220201 is an equidigital number, since it uses as much as digits as its factorization.

442440400220201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 442440400220201 its reverse (102022004044244), we get a palindrome (544462404264445).

The spelling of 442440400220201 in words is "four hundred forty-two trillion, four hundred forty billion, four hundred million, two hundred twenty thousand, two hundred one".