4023340221 has 4 divisors (see below), whose sum is σ = 5364453632. Its totient is φ = 2682226812.

The previous prime is 4023340169. The next prime is 4023340229. The reversal of 4023340221 is 1220433204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4023340221 - 2⁹ = 4023339709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023340229) 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, 670556701 + ... + 670556706.

It is an arithmetic number, because the mean of its divisors is an integer number (1341113408).

Almost surely, 2^4023340221 is an apocalyptic number.

It is an amenable number.

4023340221 is a deficient number, since it is larger than the sum of its proper divisors (1341113411).

4023340221 is a wasteful number, since it uses less digits than its factorization.

4023340221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341113410.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4023340221 is about 63429.8054624165. The cubic root of 4023340221 is about 1590.4825903493.

Adding to 4023340221 its reverse (1220433204), we get a palindrome (5243773425).

The spelling of 4023340221 in words is "four billion, twenty-three million, three hundred forty thousand, two hundred twenty-one".