4021223 has 4 divisors (see below), whose sum is σ = 4060368. Its totient is φ = 3982080.

The previous prime is 4021211. The next prime is 4021229. The reversal of 4021223 is 3221204.

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 4021223 - 2⁴ = 4021207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021198 and 4021207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19418 + ... + 19623.

It is an arithmetic number, because the mean of its divisors is an integer number (1015092).

Almost surely, 2^4021223 is an apocalyptic number.

4021223 is a deficient number, since it is larger than the sum of its proper divisors (39145).

4021223 is a wasteful number, since it uses less digits than its factorization.

4021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39144.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4021223 is about 2005.2987308628. The cubic root of 4021223 is about 159.0203552385.

Adding to 4021223 its reverse (3221204), we get a palindrome (7242427).

The spelling of 4021223 in words is "four million, twenty-one thousand, two hundred twenty-three".