1200122122200 has 192 divisors, whose sum is σ = 3757089173760. Its totient is φ = 316877790720.

The previous prime is 1200122122189. The next prime is 1200122122223. The reversal of 1200122122200 is 22212210021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200122122200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171859909 + ... + 171866891.

It is an arithmetic number, because the mean of its divisors is an integer number (19568172780).

Almost surely, 2^{1200122122200} is an apocalyptic number.

1200122122200 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 1200122122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1878544586880).

1200122122200 is an abundant number, since it is smaller than the sum of its proper divisors (2556967051560).

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

1200122122200 is a wasteful number, since it uses less digits than its factorization.

1200122122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9786 (or 9777 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200122122200 its reverse (22212210021), we get a palindrome (1222334332221).

The spelling of 1200122122200 in words is "one trillion, two hundred billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred".