123110110181 has 2 divisors, whose sum is σ = 123110110182. Its totient is φ = 123110110180.

The previous prime is 123110110171. The next prime is 123110110219. The reversal of 123110110181 is 181011011321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118067832100 + 5042278081 = 343610^2 + 71009^2 .

It is a cyclic number.

It is not a de Polignac number, because 123110110181 - 2⁶ = 123110110117 is a prime.

It is a super-2 number, since 2×123110110181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123110110171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555055090 + 61555055091.

It is an arithmetic number, because the mean of its divisors is an integer number (61555055091).

Almost surely, 2^123110110181 is an apocalyptic number.

It is an amenable number.

123110110181 is a deficient number, since it is larger than the sum of its proper divisors (1).

123110110181 is an equidigital number, since it uses as much as digits as its factorization.

123110110181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 20.

The spelling of 123110110181 in words is "one hundred twenty-three billion, one hundred ten million, one hundred ten thousand, one hundred eighty-one".