4021442242221 has 8 divisors (see below), whose sum is σ = 5677330224384. Its totient is φ = 2523257877440.

The previous prime is 4021442242193. The next prime is 4021442242231. The reversal of 4021442242221 is 1222422441204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4021442242221 - 2¹⁰ = 4021442241197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021442242231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39425904285 + ... + 39425904386.

It is an arithmetic number, because the mean of its divisors is an integer number (709666278048).

Almost surely, 2^{4021442242221} is an apocalyptic number.

It is an amenable number.

4021442242221 is a deficient number, since it is larger than the sum of its proper divisors (1655887982163).

4021442242221 is a wasteful number, since it uses less digits than its factorization.

4021442242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78851808691.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 4021442242221 its reverse (1222422441204), we get a palindrome (5243864683425).

The spelling of 4021442242221 in words is "four trillion, twenty-one billion, four hundred forty-two million, two hundred forty-two thousand, two hundred twenty-one".