423222001 has 2 divisors, whose sum is σ = 423222002. Its totient is φ = 423222000.

The previous prime is 423221963. The next prime is 423222029. The reversal of 423222001 is 100222324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249008400 + 174213601 = 15780^2 + 13199^2 .

It is a cyclic number.

It is not a de Polignac number, because 423222001 - 2⁹ = 423221489 is a prime.

It is not a weakly prime, because it can be changed into another prime (423222031) 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, 211611000 + 211611001.

It is an arithmetic number, because the mean of its divisors is an integer number (211611001).

Almost surely, 2^423222001 is an apocalyptic number.

It is an amenable number.

423222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

423222001 is an equidigital number, since it uses as much as digits as its factorization.

423222001 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 16.

The square root of 423222001 is about 20572.3601222611. The cubic root of 423222001 is about 750.7973747723.

Adding to 423222001 its reverse (100222324), we get a palindrome (523444325).

The spelling of 423222001 in words is "four hundred twenty-three million, two hundred twenty-two thousand, one".