4220215 has 4 divisors (see below), whose sum is σ = 5064264. Its totient is φ = 3376168.

The previous prime is 4220207. The next prime is 4220239. The reversal of 4220215 is 5120224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4220215 - 2³ = 4220207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422017 + ... + 422026.

It is an arithmetic number, because the mean of its divisors is an integer number (1266066).

Almost surely, 2^4220215 is an apocalyptic number.

4220215 is a deficient number, since it is larger than the sum of its proper divisors (844049).

4220215 is an equidigital number, since it uses as much as digits as its factorization.

4220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844048.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4220215 is about 2054.3161879321. The cubic root of 4220215 is about 161.6013032727.

Adding to 4220215 its reverse (5120224), we get a palindrome (9340439).

Subtracting 4220215 from its reverse (5120224), we obtain a palindrome (900009).

The spelling of 4220215 in words is "four million, two hundred twenty thousand, two hundred fifteen".