423122201 has 2 divisors, whose sum is σ = 423122202. Its totient is φ = 423122200.

The previous prime is 423122137. The next prime is 423122221. The reversal of 423122201 is 102221324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347449600 + 75672601 = 18640^2 + 8699^2 .

It is a cyclic number.

It is not a de Polignac number, because 423122201 - 2⁶ = 423122137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 423122201.

It is not a weakly prime, because it can be changed into another prime (423122221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561100 + 211561101.

It is an arithmetic number, because the mean of its divisors is an integer number (211561101).

Almost surely, 2^423122201 is an apocalyptic number.

It is an amenable number.

423122201 is a deficient number, since it is larger than the sum of its proper divisors (1).

423122201 is an equidigital number, since it uses as much as digits as its factorization.

423122201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 423122201 is about 20569.9343946450. The cubic root of 423122201 is about 750.7383549448.

Adding to 423122201 its reverse (102221324), we get a palindrome (525343525).

The spelling of 423122201 in words is "four hundred twenty-three million, one hundred twenty-two thousand, two hundred one".