12205453400 has 192 divisors, whose sum is σ = 33245372160. Its totient is φ = 4080960000.

The previous prime is 12205453333. The next prime is 12205453423. The reversal of 12205453400 is 435450221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12205453400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11186855 + ... + 11187945.

It is an arithmetic number, because the mean of its divisors is an integer number (173152980).

Almost surely, 2^12205453400 is an apocalyptic number.

12205453400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12205453400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16622686080).

12205453400 is an abundant number, since it is smaller than the sum of its proper divisors (21039918760).

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

12205453400 is a wasteful number, since it uses less digits than its factorization.

12205453400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 12205453400 in words is "twelve billion, two hundred five million, four hundred fifty-three thousand, four hundred".