12100032305 has 4 divisors (see below), whose sum is σ = 14520038772. Its totient is φ = 9680025840.

The previous prime is 12100032283. The next prime is 12100032331. The reversal of 12100032305 is 50323000121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3503219344 + 8596812961 = 59188^2 + 92719^2 .

It is not a de Polignac number, because 12100032305 - 2¹⁸ = 12099770161 is a prime.

It is a super-2 number, since 2×12100032305² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210003226 + ... + 1210003235.

It is an arithmetic number, because the mean of its divisors is an integer number (3630009693).

Almost surely, 2^12100032305 is an apocalyptic number.

It is an amenable number.

12100032305 is a deficient number, since it is larger than the sum of its proper divisors (2420006467).

12100032305 is an equidigital number, since it uses as much as digits as its factorization.

12100032305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420006466.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 12100032305 its reverse (50323000121), we get a palindrome (62423032426).

The spelling of 12100032305 in words is "twelve billion, one hundred million, thirty-two thousand, three hundred five".