442222132331 has 4 divisors (see below), whose sum is σ = 505396722672. Its totient is φ = 379047541992.

The previous prime is 442222132309. The next prime is 442222132367. The reversal of 442222132331 is 133231222244.

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

It is a de Polignac number, because none of the positive numbers 2^k-442222132331 is a prime.

It is a super-2 number, since 2×442222132331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442222132294 and 442222132303.

It is not an unprimeable number, because it can be changed into a prime (442222132531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31587295160 + ... + 31587295173.

It is an arithmetic number, because the mean of its divisors is an integer number (126349180668).

Almost surely, 2^442222132331 is an apocalyptic number.

442222132331 is a deficient number, since it is larger than the sum of its proper divisors (63174590341).

442222132331 is an equidigital number, since it uses as much as digits as its factorization.

442222132331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63174590340.

The product of its digits is 13824, while the sum is 29.

Adding to 442222132331 its reverse (133231222244), we get a palindrome (575453354575).

The spelling of 442222132331 in words is "four hundred forty-two billion, two hundred twenty-two million, one hundred thirty-two thousand, three hundred thirty-one".