12305117332 has 12 divisors (see below), whose sum is σ = 21534750720. Its totient is φ = 6152331416.

The previous prime is 12305117309. The next prime is 12305117353. The reversal of 12305117332 is 23371150321.

It is a self number, because there is not a number n which added to its sum of digits gives 12305117332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143469 + ... + 212587.

It is an arithmetic number, because the mean of its divisors is an integer number (1794562560).

Almost surely, 2^12305117332 is an apocalyptic number.

It is an amenable number.

12305117332 is a deficient number, since it is larger than the sum of its proper divisors (9229633388).

12305117332 is a wasteful number, since it uses less digits than its factorization.

12305117332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113630 (or 113628 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 12305117332 its reverse (23371150321), we get a palindrome (35676267653).

The spelling of 12305117332 in words is "twelve billion, three hundred five million, one hundred seventeen thousand, three hundred thirty-two".