442205441221 has 8 divisors (see below), whose sum is σ = 449314732800. Its totient is φ = 435120623280.

The previous prime is 442205441189. The next prime is 442205441263. The reversal of 442205441221 is 122144502244.

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 442205441221 - 2⁵ = 442205441189 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 (442205441521) 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, 6081981 + ... + 6154258.

It is an arithmetic number, because the mean of its divisors is an integer number (56164341600).

Almost surely, 2^442205441221 is an apocalyptic number.

It is an amenable number.

442205441221 is a deficient number, since it is larger than the sum of its proper divisors (7109291579).

442205441221 is a wasteful number, since it uses less digits than its factorization.

442205441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236819.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 442205441221 its reverse (122144502244), we get a palindrome (564349943465).

The spelling of 442205441221 in words is "four hundred forty-two billion, two hundred five million, four hundred forty-one thousand, two hundred twenty-one".