422421001 has 2 divisors, whose sum is σ = 422421002. Its totient is φ = 422421000.

The previous prime is 422420987. The next prime is 422421011. The reversal of 422421001 is 100124224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241491600 + 180929401 = 15540^2 + 13451^2 .

It is a cyclic number.

It is not a de Polignac number, because 422421001 - 2¹⁵ = 422388233 is a prime.

It is not a weakly prime, because it can be changed into another prime (422421011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211210500 + 211210501.

It is an arithmetic number, because the mean of its divisors is an integer number (211210501).

Almost surely, 2^422421001 is an apocalyptic number.

It is an amenable number.

422421001 is a deficient number, since it is larger than the sum of its proper divisors (1).

422421001 is an equidigital number, since it uses as much as digits as its factorization.

422421001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 422421001 is about 20552.8830337741. The cubic root of 422421001 is about 750.3234166637.

Adding to 422421001 its reverse (100124224), we get a palindrome (522545225).

The spelling of 422421001 in words is "four hundred twenty-two million, four hundred twenty-one thousand, one".