12305597121 has 12 divisors (see below), whose sum is σ = 17822409748. Its totient is φ = 8181735264.

The previous prime is 12305597107. The next prime is 12305597131. The reversal of 12305597121 is 12179550321.

12305597121 is a `hidden beast` number, since 1 + 2 + 30 + 559 + 71 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10335568896 + 1970028225 = 101664^2 + 44385^2 .

It is not a de Polignac number, because 12305597121 - 2¹¹ = 12305595073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12305597131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1829470 + ... + 1836183.

Almost surely, 2^12305597121 is an apocalyptic number.

It is an amenable number.

12305597121 is a deficient number, since it is larger than the sum of its proper divisors (5516812627).

12305597121 is a wasteful number, since it uses less digits than its factorization.

12305597121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666032 (or 3666029 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The spelling of 12305597121 in words is "twelve billion, three hundred five million, five hundred ninety-seven thousand, one hundred twenty-one".