12205535200 has 36 divisors (see below), whose sum is σ = 29796764760. Its totient is φ = 4882213760.

The previous prime is 12205535149. The next prime is 12205535213. The reversal of 12205535200 is 253550221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7627660 + ... + 7629259.

It is an arithmetic number, because the mean of its divisors is an integer number (827687910).

Almost surely, 2^12205535200 is an apocalyptic number.

12205535200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12205535200 is an abundant number, since it is smaller than the sum of its proper divisors (17591229560).

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

12205535200 is a wasteful number, since it uses less digits than its factorization.

12205535200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15256939 (or 15256926 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 12205535200 in words is "twelve billion, two hundred five million, five hundred thirty-five thousand, two hundred".