118760821 has 2 divisors, whose sum is σ = 118760822. Its totient is φ = 118760820.

The previous prime is 118760819. The next prime is 118760843. The reversal of 118760821 is 128067811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117483921 + 1276900 = 10839^2 + 1130^2 .

It is an emirp because it is prime and its reverse (128067811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118760821 - 2¹ = 118760819 is a prime.

Together with 118760819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118760021) 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, 59380410 + 59380411.

It is an arithmetic number, because the mean of its divisors is an integer number (59380411).

Almost surely, 2^118760821 is an apocalyptic number.

It is an amenable number.

118760821 is a deficient number, since it is larger than the sum of its proper divisors (1).

118760821 is an equidigital number, since it uses as much as digits as its factorization.

118760821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 118760821 is about 10897.7438490726. The cubic root of 118760821 is about 491.5387156980.

The spelling of 118760821 in words is "one hundred eighteen million, seven hundred sixty thousand, eight hundred twenty-one".