12201001200 has 180 divisors, whose sum is σ = 42456211200. Its totient is φ = 3244738560.

The previous prime is 12201001171. The next prime is 12201001213. The reversal of 12201001200 is 210010221.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1374376 + ... + 1383224.

It is an arithmetic number, because the mean of its divisors is an integer number (235867840).

Almost surely, 2^12201001200 is an apocalyptic number.

12201001200 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 12201001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21228105600).

12201001200 is an abundant number, since it is smaller than the sum of its proper divisors (30255210000).

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

12201001200 is a wasteful number, since it uses less digits than its factorization.

12201001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9256 (or 9242 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12201001200 its reverse (210010221), we get a palindrome (12411011421).

The spelling of 12201001200 in words is "twelve billion, two hundred one million, one thousand, two hundred".