218112827 has 2 divisors, whose sum is σ = 218112828. Its totient is φ = 218112826.

The previous prime is 218112821. The next prime is 218112859. The reversal of 218112827 is 728211812.

It is a happy number.

It is an a-pointer prime, because the next prime (218112859) can be obtained adding 218112827 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218112827 - 2¹² = 218108731 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 218112793 and 218112802.

It is not a weakly prime, because it can be changed into another prime (218112821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109056413 + 109056414.

It is an arithmetic number, because the mean of its divisors is an integer number (109056414).

Almost surely, 2^218112827 is an apocalyptic number.

218112827 is a deficient number, since it is larger than the sum of its proper divisors (1).

218112827 is an equidigital number, since it uses as much as digits as its factorization.

218112827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 32.

The square root of 218112827 is about 14768.6433703303. The cubic root of 218112827 is about 601.9499770799.

The spelling of 218112827 in words is "two hundred eighteen million, one hundred twelve thousand, eight hundred twenty-seven".