442044212231 has 2 divisors, whose sum is σ = 442044212232. Its totient is φ = 442044212230.

The previous prime is 442044212209. The next prime is 442044212251. The reversal of 442044212231 is 132212440244.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442044212231 is a prime.

It is a super-2 number, since 2×442044212231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442044212194 and 442044212203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442044212251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221022106115 + 221022106116.

It is an arithmetic number, because the mean of its divisors is an integer number (221022106116).

Almost surely, 2^442044212231 is an apocalyptic number.

442044212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

442044212231 is an equidigital number, since it uses as much as digits as its factorization.

442044212231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 442044212231 its reverse (132212440244), we get a palindrome (574256652475).

The spelling of 442044212231 in words is "four hundred forty-two billion, forty-four million, two hundred twelve thousand, two hundred thirty-one".