12205508936 has 16 divisors (see below), whose sum is σ = 22886614140. Its totient is φ = 6102411840.

The previous prime is 12205508881. The next prime is 12205508941. The reversal of 12205508936 is 63980550221.

It can be written as a sum of positive squares in 2 ways, for example, as 10731716836 + 1473792100 = 103594^2 + 38390^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12205508893 and 12205508902.

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, 171890 + ... + 232286.

Almost surely, 2^12205508936 is an apocalyptic number.

It is an amenable number.

12205508936 is a deficient number, since it is larger than the sum of its proper divisors (10681105204).

12205508936 is a wasteful number, since it uses less digits than its factorization.

12205508936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85664 (or 85660 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 12205508936 in words is "twelve billion, two hundred five million, five hundred eight thousand, nine hundred thirty-six".