4035221201221 has 16 divisors (see below), whose sum is σ = 4883230958976. Its totient is φ = 3255121691136.

The previous prime is 4035221201203. The next prime is 4035221201269. The reversal of 4035221201221 is 1221021225304.

4035221201221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4035221201221 - 2⁹ = 4035221200709 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 (4035221201201) 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, 1196130 + ... + 3082396.

It is an arithmetic number, because the mean of its divisors is an integer number (305201934936).

Almost surely, 2^{4035221201221} is an apocalyptic number.

It is an amenable number.

4035221201221 is a deficient number, since it is larger than the sum of its proper divisors (848009757755).

4035221201221 is a wasteful number, since it uses less digits than its factorization.

4035221201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904268.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 4035221201221 its reverse (1221021225304), we get a palindrome (5256242426525).

The spelling of 4035221201221 in words is "four trillion, thirty-five billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-one".