12104208520 has 16 divisors (see below), whose sum is σ = 27234469260. Its totient is φ = 4841683392.

The previous prime is 12104208517. The next prime is 12104208521. The reversal of 12104208520 is 2580240121.

It can be written as a sum of positive squares in 2 ways, for example, as 9697128676 + 2407079844 = 98474^2 + 49062^2 .

It is not an unprimeable number, because it can be changed into a prime (12104208521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151302567 + ... + 151302646.

Almost surely, 2^12104208520 is an apocalyptic number.

12104208520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12104208520 is an abundant number, since it is smaller than the sum of its proper divisors (15130260740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12104208520 is a wasteful number, since it uses less digits than its factorization.

12104208520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302605224 (or 302605220 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 12104208520 its reverse (2580240121), we get a palindrome (14684448641).

The spelling of 12104208520 in words is "twelve billion, one hundred four million, two hundred eight thousand, five hundred twenty".