12605101 has 4 divisors (see below), whose sum is σ = 12811804. Its totient is φ = 12398400.

The previous prime is 12605077. The next prime is 12605137. The reversal of 12605101 is 10150621.

12605101 = 259² + 260² + ... + 380².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10150621 = 13 ⋅780817.

It can be written as a sum of positive squares in 2 ways, for example, as 348100 + 12257001 = 590^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 12605101 - 2⁵ = 12605069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103260 + ... + 103381.

It is an arithmetic number, because the mean of its divisors is an integer number (3202951).

Almost surely, 2^12605101 is an apocalyptic number.

It is an amenable number.

12605101 is a deficient number, since it is larger than the sum of its proper divisors (206703).

12605101 is an equidigital number, since it uses as much as digits as its factorization.

12605101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206702.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 12605101 is about 3550.3663191282. The cubic root of 12605101 is about 232.7280746479.

Adding to 12605101 its reverse (10150621), we get a palindrome (22755722).

The spelling of 12605101 in words is "twelve million, six hundred five thousand, one hundred one".