12121304307 has 16 divisors (see below), whose sum is σ = 18616000512. Its totient is φ = 6871919040.

The previous prime is 12121304269. The next prime is 12121304311. The reversal of 12121304307 is 70340312121.

It is a happy number.

It is not a de Polignac number, because 12121304307 - 2⁸ = 12121304051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121314307) 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, 2269794 + ... + 2275127.

It is an arithmetic number, because the mean of its divisors is an integer number (1163500032).

Almost surely, 2^12121304307 is an apocalyptic number.

12121304307 is a deficient number, since it is larger than the sum of its proper divisors (6494696205).

12121304307 is a wasteful number, since it uses less digits than its factorization.

12121304307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545058.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 12121304307 its reverse (70340312121), we get a palindrome (82461616428).

The spelling of 12121304307 in words is "twelve billion, one hundred twenty-one million, three hundred four thousand, three hundred seven".