1200201222220 has 288 divisors, whose sum is σ = 3581759623680. Its totient is φ = 327136942080.

The previous prime is 1200201222217. The next prime is 1200201222281. The reversal of 1200201222220 is 222221020021.

It is a junction number, because it is equal to n+sod(n) for n = 1200201222194 and 1200201222203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4823584 + ... + 5066296.

It is an arithmetic number, because the mean of its divisors is an integer number (12436665360).

Almost surely, 2^{1200201222220} is an apocalyptic number.

1200201222220 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 1200201222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790879811840).

1200201222220 is an abundant number, since it is smaller than the sum of its proper divisors (2381558401460).

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

1200201222220 is a wasteful number, since it uses less digits than its factorization.

1200201222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242785 (or 242770 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1200201222220 its reverse (222221020021), we get a palindrome (1422422242241).

The spelling of 1200201222220 in words is "one trillion, two hundred billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty".