3442020221 has 16 divisors (see below), whose sum is σ = 3689674560. Its totient is φ = 3201223680.

The previous prime is 3442020199. The next prime is 3442020251. The reversal of 3442020221 is 1220202443.

It is a cyclic number.

It is not a de Polignac number, because 3442020221 - 2⁶ = 3442020157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3442020193 and 3442020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3442020251) 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, 666170 + ... + 671316.

It is an arithmetic number, because the mean of its divisors is an integer number (230604660).

Almost surely, 2^3442020221 is an apocalyptic number.

It is an amenable number.

3442020221 is a deficient number, since it is larger than the sum of its proper divisors (247654339).

3442020221 is a wasteful number, since it uses less digits than its factorization.

3442020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804.

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

The square root of 3442020221 is about 58668.7329077423. The cubic root of 3442020221 is about 1509.8639149030.

Adding to 3442020221 its reverse (1220202443), we get a palindrome (4662222664).

The spelling of 3442020221 in words is "three billion, four hundred forty-two million, twenty thousand, two hundred twenty-one".