4342020221 has 16 divisors (see below), whose sum is σ = 5429523840. Its totient is φ = 3373332480.

The previous prime is 4342020211. The next prime is 4342020227. The reversal of 4342020221 is 1220202434.

It is not a de Polignac number, because 4342020221 - 2¹⁰ = 4342019197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4342020193 and 4342020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4342020227) 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, 57716 + ... + 109613.

It is an arithmetic number, because the mean of its divisors is an integer number (339345240).

Almost surely, 2^4342020221 is an apocalyptic number.

It is an amenable number.

4342020221 is a deficient number, since it is larger than the sum of its proper divisors (1087503619).

4342020221 is a wasteful number, since it uses less digits than its factorization.

4342020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167684.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4342020221 is about 65894.0074741247. The cubic root of 4342020221 is about 1631.4131071894.

Adding to 4342020221 its reverse (1220202434), we get a palindrome (5562222655).

The spelling of 4342020221 in words is "four billion, three hundred forty-two million, twenty thousand, two hundred twenty-one".