118216801 has 2 divisors, whose sum is σ = 118216802. Its totient is φ = 118216800.

The previous prime is 118216799. The next prime is 118216829. The reversal of 118216801 is 108612811.

It is an a-pointer prime, because the next prime (118216829) can be obtained adding 118216801 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81432576 + 36784225 = 9024^2 + 6065^2 .

It is a cyclic number.

It is not a de Polignac number, because 118216801 - 2¹ = 118216799 is a prime.

Together with 118216799, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 118216801.

It is not a weakly prime, because it can be changed into another prime (118216201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59108400 + 59108401.

It is an arithmetic number, because the mean of its divisors is an integer number (59108401).

Almost surely, 2^118216801 is an apocalyptic number.

It is an amenable number.

118216801 is a deficient number, since it is larger than the sum of its proper divisors (1).

118216801 is an equidigital number, since it uses as much as digits as its factorization.

118216801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 118216801 is about 10872.7549866628. The cubic root of 118216801 is about 490.7870192912.

The spelling of 118216801 in words is "one hundred eighteen million, two hundred sixteen thousand, eight hundred one".