442212122 has 32 divisors (see below), whose sum is σ = 758661120. Its totient is φ = 191355120.

The previous prime is 442212103. The next prime is 442212149. The reversal of 442212122 is 221212244.

It is a junction number, because it is equal to n+sod(n) for n = 442212094 and 442212103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110879 + ... + 114797.

It is an arithmetic number, because the mean of its divisors is an integer number (23708160).

Almost surely, 2^442212122 is an apocalyptic number.

442212122 is a deficient number, since it is larger than the sum of its proper divisors (316448998).

442212122 is a wasteful number, since it uses less digits than its factorization.

442212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178.

The product of its digits is 512, while the sum is 20.

The square root of 442212122 is about 21028.8402438175. The cubic root of 442212122 is about 761.8629975769.

Adding to 442212122 its reverse (221212244), we get a palindrome (663424366).

The spelling of 442212122 in words is "four hundred forty-two million, two hundred twelve thousand, one hundred twenty-two".