123110121073 has 2 divisors, whose sum is σ = 123110121074. Its totient is φ = 123110121072.

The previous prime is 123110120993. The next prime is 123110121091. The reversal of 123110121073 is 370121011321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77805849969 + 45304271104 = 278937^2 + 212848^2 .

It is an emirp because it is prime and its reverse (370121011321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123110121073 is a prime.

It is a super-2 number, since 2×123110121073² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123110122073) 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, 61555060536 + 61555060537.

It is an arithmetic number, because the mean of its divisors is an integer number (61555060537).

Almost surely, 2^123110121073 is an apocalyptic number.

It is an amenable number.

123110121073 is a deficient number, since it is larger than the sum of its proper divisors (1).

123110121073 is an equidigital number, since it uses as much as digits as its factorization.

123110121073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 123110121073 its reverse (370121011321), we get a palindrome (493231132394).

The spelling of 123110121073 in words is "one hundred twenty-three billion, one hundred ten million, one hundred twenty-one thousand, seventy-three".