442212011 has 2 divisors, whose sum is σ = 442212012. Its totient is φ = 442212010.

The previous prime is 442211999. The next prime is 442212031. The reversal of 442212011 is 110212244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442212011 - 2²² = 438017707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442212031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221106005 + 221106006.

It is an arithmetic number, because the mean of its divisors is an integer number (221106006).

Almost surely, 2^442212011 is an apocalyptic number.

442212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

442212011 is an equidigital number, since it uses as much as digits as its factorization.

442212011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 442212011 is about 21028.8376045848. The cubic root of 442212011 is about 761.8629338316.

Adding to 442212011 its reverse (110212244), we get a palindrome (552424255).

The spelling of 442212011 in words is "four hundred forty-two million, two hundred twelve thousand, eleven".