4222621 has 8 divisors (see below), whose sum is σ = 4644864. Its totient is φ = 3814320.

The previous prime is 4222619. The next prime is 4222627. The reversal of 4222621 is 1262224.

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

It is a cyclic number.

It is not a de Polignac number, because 4222621 - 2¹ = 4222619 is a prime.

It is a Duffinian number.

4222621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2845 + ... + 4066.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

Almost surely, 2^4222621 is an apocalyptic number.

It is an amenable number.

4222621 is a deficient number, since it is larger than the sum of its proper divisors (422243).

4222621 is a wasteful number, since it uses less digits than its factorization.

4222621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971.

The product of its digits is 384, while the sum is 19.

The square root of 4222621 is about 2054.9017008120. The cubic root of 4222621 is about 161.6320077802.

Adding to 4222621 its reverse (1262224), we get a palindrome (5484845).

The spelling of 4222621 in words is "four million, two hundred twenty-two thousand, six hundred twenty-one".