422203121 has 4 divisors (see below), whose sum is σ = 422945700. Its totient is φ = 421460544.

The previous prime is 422203091. The next prime is 422203127. The reversal of 422203121 is 121302224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 240250000 + 181953121 = 15500^2 + 13489^2 .

It is a cyclic number.

It is not a de Polignac number, because 422203121 - 2⁶ = 422203057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422203121.

It is not an unprimeable number, because it can be changed into a prime (422203127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370436 + ... + 371573.

It is an arithmetic number, because the mean of its divisors is an integer number (105736425).

Almost surely, 2^422203121 is an apocalyptic number.

It is an amenable number.

422203121 is a deficient number, since it is larger than the sum of its proper divisors (742579).

422203121 is an equidigital number, since it uses as much as digits as its factorization.

422203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742578.

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

The square root of 422203121 is about 20547.5818771942. The cubic root of 422203121 is about 750.1943916856.

Adding to 422203121 its reverse (121302224), we get a palindrome (543505345).

The spelling of 422203121 in words is "four hundred twenty-two million, two hundred three thousand, one hundred twenty-one".