442122211 has 8 divisors (see below), whose sum is σ = 444001104. Its totient is φ = 440248320.

The previous prime is 442122209. The next prime is 442122251. The reversal of 442122211 is 112221244.

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 442122211 - 2¹ = 442122209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442122251) 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, 324171 + ... + 325531.

It is an arithmetic number, because the mean of its divisors is an integer number (55500138).

Almost surely, 2^442122211 is an apocalyptic number.

442122211 is a deficient number, since it is larger than the sum of its proper divisors (1878893).

442122211 is a wasteful number, since it uses less digits than its factorization.

442122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501.

The product of its digits is 256, while the sum is 19.

The square root of 442122211 is about 21026.7023329860. The cubic root of 442122211 is about 761.8113598345.

Adding to 442122211 its reverse (112221244), we get a palindrome (554343455).

The spelling of 442122211 in words is "four hundred forty-two million, one hundred twenty-two thousand, two hundred eleven".