12128007308 has 6 divisors (see below), whose sum is σ = 21224012796. Its totient is φ = 6064003652.

The previous prime is 12128007299. The next prime is 12128007313. The reversal of 12128007308 is 80370082121.

It is a super-2 number, since 2×12128007308² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516000910 + ... + 1516000917.

It is an arithmetic number, because the mean of its divisors is an integer number (3537335466).

Almost surely, 2^12128007308 is an apocalyptic number.

It is an amenable number.

12128007308 is a deficient number, since it is larger than the sum of its proper divisors (9096005488).

12128007308 is a wasteful number, since it uses less digits than its factorization.

12128007308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032001831 (or 3032001829 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

Adding to 12128007308 its reverse (80370082121), we get a palindrome (92498089429).

The spelling of 12128007308 in words is "twelve billion, one hundred twenty-eight million, seven thousand, three hundred eight".