444142201221 has 12 divisors (see below), whose sum is σ = 652412273760. Its totient is φ = 291076244520.

The previous prime is 444142201207. The next prime is 444142201259. The reversal of 444142201221 is 122102241444.

444142201221 is a `hidden beast` number, since 4 + 4 + 414 + 2 + 20 + 1 + 221 = 666.

It is not a de Polignac number, because 444142201221 - 2¹⁰ = 444142200197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444142201291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418212465 + ... + 418213526.

It is an arithmetic number, because the mean of its divisors is an integer number (54367689480).

Almost surely, 2^444142201221 is an apocalyptic number.

It is an amenable number.

444142201221 is a deficient number, since it is larger than the sum of its proper divisors (208270072539).

444142201221 is a wasteful number, since it uses less digits than its factorization.

444142201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836426056 (or 836426053 counting only the distinct ones).

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

Adding to 444142201221 its reverse (122102241444), we get a palindrome (566244442665).

The spelling of 444142201221 in words is "four hundred forty-four billion, one hundred forty-two million, two hundred one thousand, two hundred twenty-one".