422111421 has 24 divisors (see below), whose sum is σ = 618706296. Its totient is φ = 277286400.

The previous prime is 422111383. The next prime is 422111461. The reversal of 422111421 is 124111224.

It can be written as a sum of positive squares in 4 ways, for example, as 153512100 + 268599321 = 12390^2 + 16389^2 .

It is not a de Polignac number, because 422111421 - 2¹⁰ = 422110397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422111394 and 422111403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422111461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210801 + ... + 212793.

It is an arithmetic number, because the mean of its divisors is an integer number (25779429).

Almost surely, 2^422111421 is an apocalyptic number.

It is an amenable number.

422111421 is a deficient number, since it is larger than the sum of its proper divisors (196594875).

422111421 is a wasteful number, since it uses less digits than its factorization.

422111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333 (or 2330 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 422111421 is about 20545.3503498967. The cubic root of 422111421 is about 750.1400751703.

Adding to 422111421 its reverse (124111224), we get a palindrome (546222645).

The spelling of 422111421 in words is "four hundred twenty-two million, one hundred eleven thousand, four hundred twenty-one".