123112601 has 4 divisors (see below), whose sum is σ = 123382452. Its totient is φ = 122842752.

The previous prime is 123112597. The next prime is 123112607. The reversal of 123112601 is 106211321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106211321 = 2731 ⋅38891.

It can be written as a sum of positive squares in 2 ways, for example, as 101022601 + 22090000 = 10051^2 + 4700^2 .

It is a cyclic number.

It is not a de Polignac number, because 123112601 - 2² = 123112597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123112601.

It is not an unprimeable number, because it can be changed into a prime (123112607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134240 + ... + 135153.

It is an arithmetic number, because the mean of its divisors is an integer number (30845613).

Almost surely, 2^123112601 is an apocalyptic number.

It is an amenable number.

123112601 is a deficient number, since it is larger than the sum of its proper divisors (269851).

123112601 is an equidigital number, since it uses as much as digits as its factorization.

123112601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269850.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 123112601 is about 11095.6117902529. The cubic root of 123112601 is about 497.4706948050.

Adding to 123112601 its reverse (106211321), we get a palindrome (229323922).

The spelling of 123112601 in words is "one hundred twenty-three million, one hundred twelve thousand, six hundred one".