123112575277 has 2 divisors, whose sum is σ = 123112575278. Its totient is φ = 123112575276.

The previous prime is 123112575253. The next prime is 123112575323. The reversal of 123112575277 is 772575211321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100594271556 + 22518303721 = 317166^2 + 150061^2 .

It is a cyclic number.

It is not a de Polignac number, because 123112575277 - 2¹¹ = 123112573229 is a prime.

It is a super-3 number, since 3×123112575277³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123112573277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61556287638 + 61556287639.

It is an arithmetic number, because the mean of its divisors is an integer number (61556287639).

Almost surely, 2^123112575277 is an apocalyptic number.

It is an amenable number.

123112575277 is a deficient number, since it is larger than the sum of its proper divisors (1).

123112575277 is an equidigital number, since it uses as much as digits as its factorization.

123112575277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205800, while the sum is 43.

Adding to 123112575277 its reverse (772575211321), we get a palindrome (895687786598).

The spelling of 123112575277 in words is "one hundred twenty-three billion, one hundred twelve million, five hundred seventy-five thousand, two hundred seventy-seven".