118224375721 has 2 divisors, whose sum is σ = 118224375722. Its totient is φ = 118224375720.

The previous prime is 118224375713. The next prime is 118224375733. The reversal of 118224375721 is 127573422811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113831337321 + 4393038400 = 337389^2 + 66280^2 .

It is a cyclic number.

It is not a de Polignac number, because 118224375721 - 2³ = 118224375713 is a prime.

It is not a weakly prime, because it can be changed into another prime (118224375751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59112187860 + 59112187861.

It is an arithmetic number, because the mean of its divisors is an integer number (59112187861).

Almost surely, 2^118224375721 is an apocalyptic number.

It is an amenable number.

118224375721 is a deficient number, since it is larger than the sum of its proper divisors (1).

118224375721 is an equidigital number, since it uses as much as digits as its factorization.

118224375721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The spelling of 118224375721 in words is "one hundred eighteen billion, two hundred twenty-four million, three hundred seventy-five thousand, seven hundred twenty-one".