4221219 has 16 divisors (see below), whose sum is σ = 6123168. Its totient is φ = 2575872.

The previous prime is 4221209. The next prime is 4221223. The reversal of 4221219 is 9121224.

It is not a de Polignac number, because 4221219 - 2⁸ = 4220963 is a prime.

It is a super-2 number, since 2×4221219² = 35637379691922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4221195 and 4221204.

It is not an unprimeable number, because it can be changed into a prime (4221209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (382698).

Almost surely, 2^4221219 is an apocalyptic number.

4221219 is a deficient number, since it is larger than the sum of its proper divisors (1901949).

4221219 is a wasteful number, since it uses less digits than its factorization.

4221219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294.

The product of its digits is 288, while the sum is 21.

The square root of 4221219 is about 2054.5605369519. The cubic root of 4221219 is about 161.6141173784.

It can be divided in two parts, 42 and 21219, that multiplied together give a palindrome (891198).

The spelling of 4221219 in words is "four million, two hundred twenty-one thousand, two hundred nineteen".