4221123 has 4 divisors (see below), whose sum is σ = 5628168. Its totient is φ = 2814080.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221123 is 3211224.

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 4221123 - 2²¹ = 2123971 is a prime.

It is a super-2 number, since 2×4221123² = 35635758762258, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4221193) 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, 703518 + ... + 703523.

It is an arithmetic number, because the mean of its divisors is an integer number (1407042).

Almost surely, 2^4221123 is an apocalyptic number.

4221123 is a deficient number, since it is larger than the sum of its proper divisors (1407045).

4221123 is a wasteful number, since it uses less digits than its factorization.

4221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407044.

The product of its digits is 96, while the sum is 15.

The square root of 4221123 is about 2054.5371741587. The cubic root of 4221123 is about 161.6128922131.

Adding to 4221123 its reverse (3211224), we get a palindrome (7432347).

The spelling of 4221123 in words is "four million, two hundred twenty-one thousand, one hundred twenty-three".