442221521204212 has 48 divisors (see below), whose sum is σ = 783859108032000. Its totient is φ = 218274986304000.

The previous prime is 442221521204159. The next prime is 442221521204231. The reversal of 442221521204212 is 212402125122244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650705164 + ... + 651384412.

It is an arithmetic number, because the mean of its divisors is an integer number (16330398084000).

Almost surely, 2^{442221521204212} is an apocalyptic number.

It is an amenable number.

442221521204212 is a deficient number, since it is larger than the sum of its proper divisors (341637586827788).

442221521204212 is a wasteful number, since it uses less digits than its factorization.

442221521204212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684112 (or 684110 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 34.

Adding to 442221521204212 its reverse (212402125122244), we get a palindrome (654623646326456).

The spelling of 442221521204212 in words is "four hundred forty-two trillion, two hundred twenty-one billion, five hundred twenty-one million, two hundred four thousand, two hundred twelve".