424422121 has 2 divisors, whose sum is σ = 424422122. Its totient is φ = 424422120.

The previous prime is 424422113. The next prime is 424422139. The reversal of 424422121 is 121224424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413105625 + 11316496 = 20325^2 + 3364^2 .

It is a cyclic number.

It is not a de Polignac number, because 424422121 - 2³ = 424422113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 424422092 and 424422101.

It is not a weakly prime, because it can be changed into another prime (424422101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212211060 + 212211061.

It is an arithmetic number, because the mean of its divisors is an integer number (212211061).

Almost surely, 2^424422121 is an apocalyptic number.

It is an amenable number.

424422121 is a deficient number, since it is larger than the sum of its proper divisors (1).

424422121 is an equidigital number, since it uses as much as digits as its factorization.

424422121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024, while the sum is 22.

The square root of 424422121 is about 20601.5077360857. The cubic root of 424422121 is about 751.5063774474.

Adding to 424422121 its reverse (121224424), we get a palindrome (545646545).

The spelling of 424422121 in words is "four hundred twenty-four million, four hundred twenty-two thousand, one hundred twenty-one".