4227021 has 12 divisors (see below), whose sum is σ = 6140160. Its totient is φ = 2802120.

The previous prime is 4226993. The next prime is 4227023. The reversal of 4227021 is 1207224.

It is not a de Polignac number, because 4227021 - 2¹³ = 4218829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4226985 and 4227003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4227023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (511680).

Almost surely, 2^4227021 is an apocalyptic number.

It is an amenable number.

4227021 is a deficient number, since it is larger than the sum of its proper divisors (1913139).

4227021 is a wasteful number, since it uses less digits than its factorization.

4227021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 4227021 is about 2055.9720328837. The cubic root of 4227021 is about 161.6881288449.

The spelling of 4227021 in words is "four million, two hundred twenty-seven thousand, twenty-one".