12100061605 has 16 divisors (see below), whose sum is σ = 15154337664. Its totient is φ = 9257371200.

The previous prime is 12100061569. The next prime is 12100061609. The reversal of 12100061605 is 50616000121.

It is not a de Polignac number, because 12100061605 - 2⁹ = 12100061093 is a prime.

It is a super-2 number, since 2×12100061605² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100061609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1133302 + ... + 1143928.

It is an arithmetic number, because the mean of its divisors is an integer number (947146104).

Almost surely, 2^12100061605 is an apocalyptic number.

It is an amenable number.

12100061605 is a deficient number, since it is larger than the sum of its proper divisors (3054276059).

12100061605 is a wasteful number, since it uses less digits than its factorization.

12100061605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20556.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 12100061605 its reverse (50616000121), we get a palindrome (62716061726).

The spelling of 12100061605 in words is "twelve billion, one hundred million, sixty-one thousand, six hundred five".