12200505520 has 40 divisors (see below), whose sum is σ = 32418487584. Its totient is φ = 4183030272.

The previous prime is 12200505509. The next prime is 12200505599. The reversal of 12200505520 is 2550500221.

12200505520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 12200505491 and 12200505500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10892749 + ... + 10893868.

Almost surely, 2^12200505520 is an apocalyptic number.

12200505520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200505520 is an abundant number, since it is smaller than the sum of its proper divisors (20217982064).

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

12200505520 is a wasteful number, since it uses less digits than its factorization.

12200505520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21786637 (or 21786631 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The spelling of 12200505520 in words is "twelve billion, two hundred million, five hundred five thousand, five hundred twenty".