118618721101 has 2 divisors, whose sum is σ = 118618721102. Its totient is φ = 118618721100.

The previous prime is 118618721069. The next prime is 118618721167. The reversal of 118618721101 is 101127816811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69711840900 + 48906880201 = 264030^2 + 221149^2 .

It is a cyclic number.

It is not a de Polignac number, because 118618721101 - 2⁵ = 118618721069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118618721701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59309360550 + 59309360551.

It is an arithmetic number, because the mean of its divisors is an integer number (59309360551).

Almost surely, 2^118618721101 is an apocalyptic number.

It is an amenable number.

118618721101 is a deficient number, since it is larger than the sum of its proper divisors (1).

118618721101 is an equidigital number, since it uses as much as digits as its factorization.

118618721101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 37.

The spelling of 118618721101 in words is "one hundred eighteen billion, six hundred eighteen million, seven hundred twenty-one thousand, one hundred one".