442221545122205 has 4 divisors (see below), whose sum is σ = 530665854146652. Its totient is φ = 353777236097760.

The previous prime is 442221545122171. The next prime is 442221545122219. The reversal of 442221545122205 is 502221545122244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116328175086916 + 325893370035289 = 10785554^2 + 18052517^2 .

It is not a de Polignac number, because 442221545122205 - 2¹⁸ = 442221544860061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44222154512216 + ... + 44222154512225.

It is an arithmetic number, because the mean of its divisors is an integer number (132666463536663).

Almost surely, 2^{442221545122205} is an apocalyptic number.

It is an amenable number.

442221545122205 is a deficient number, since it is larger than the sum of its proper divisors (88444309024447).

442221545122205 is an equidigital number, since it uses as much as digits as its factorization.

442221545122205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88444309024446.

The product of its (nonzero) digits is 512000, while the sum is 41.

The spelling of 442221545122205 in words is "four hundred forty-two trillion, two hundred twenty-one billion, five hundred forty-five million, one hundred twenty-two thousand, two hundred five".