4021442410221 has 6 divisors (see below), whose sum is σ = 5808750148110. Its totient is φ = 2680961606808.

The previous prime is 4021442410211. The next prime is 4021442410229. The reversal of 4021442410221 is 1220142441204.

4021442410221 is a `hidden beast` number, since 4 + 0 + 2 + 1 + 4 + 424 + 10 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3648596616900 + 372845793321 = 1910130^2 + 610611^2 .

It is not a de Polignac number, because 4021442410221 - 2¹¹ = 4021442408173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021442410229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223413467226 + ... + 223413467243.

It is an arithmetic number, because the mean of its divisors is an integer number (968125024685).

Almost surely, 2^{4021442410221} is an apocalyptic number.

It is an amenable number.

4021442410221 is a deficient number, since it is larger than the sum of its proper divisors (1787307737889).

4021442410221 is a wasteful number, since it uses less digits than its factorization.

4021442410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446826934475 (or 446826934472 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 4021442410221 its reverse (1220142441204), we get a palindrome (5241584851425).

The spelling of 4021442410221 in words is "four trillion, twenty-one billion, four hundred forty-two million, four hundred ten thousand, two hundred twenty-one".