4222421421 has 8 divisors (see below), whose sum is σ = 5760823200. Its totient is φ = 2749483632.

The previous prime is 4222421419. The next prime is 4222421429. The reversal of 4222421421 is 1241242224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4222421421 - 2¹ = 4222421419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4222421391 and 4222421400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222421429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16365846 + ... + 16366103.

It is an arithmetic number, because the mean of its divisors is an integer number (720102900).

Almost surely, 2^4222421421 is an apocalyptic number.

It is an amenable number.

4222421421 is a deficient number, since it is larger than the sum of its proper divisors (1538401779).

4222421421 is a wasteful number, since it uses less digits than its factorization.

4222421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32731995.

The product of its digits is 2048, while the sum is 24.

The square root of 4222421421 is about 64980.1617495678. The cubic root of 4222421421 is about 1616.2946126841.

Adding to 4222421421 its reverse (1241242224), we get a palindrome (5463663645).

The spelling of 4222421421 in words is "four billion, two hundred twenty-two million, four hundred twenty-one thousand, four hundred twenty-one".