123165200601 has 81 divisors (see below), whose sum is σ = 193317080853. Its totient is φ = 75552300720.

The previous prime is 123165200567. The next prime is 123165200647. The reversal of 123165200601 is 106002561321.

The square root of 123165200601 is 350949.

It is a perfect power (a square), and thus also a powerful number.

123165200601 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 6 + 52 + 0 + 0 + 601 = 666.

It is not a de Polignac number, because 123165200601 - 2²¹ = 123163103449 is a prime.

It is a super-2 number, since 2×123165200601² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123165200671) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 940192306 + ... + 940192436.

Almost surely, 2^123165200601 is an apocalyptic number.

123165200601 is the 350949-th square number.

123165200601 is the 175475-th centered octagonal number.

It is an amenable number.

123165200601 is a deficient number, since it is larger than the sum of its proper divisors (70151880252).

123165200601 is an equidigital number, since it uses as much as digits as its factorization.

123165200601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 123165200601 its reverse (106002561321), we get a palindrome (229167761922).

The spelling of 123165200601 in words is "one hundred twenty-three billion, one hundred sixty-five million, two hundred thousand, six hundred one".