1220011201200 has 360 divisors, whose sum is σ = 4318271612928. Its totient is φ = 294205120000.

The previous prime is 1220011201193. The next prime is 1220011201217. The reversal of 1220011201200 is 21021100221.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 71 ways as a sum of consecutive naturals, for example, 27711205 + ... + 27755195.

Almost surely, 2^{1220011201200} is an apocalyptic number.

1220011201200 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 1220011201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159135806464).

1220011201200 is an abundant number, since it is smaller than the sum of its proper divisors (3098260411728).

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

1220011201200 is a wasteful number, since it uses less digits than its factorization.

1220011201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44225 (or 44203 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220011201200 its reverse (21021100221), we get a palindrome (1241032301421).

The spelling of 1220011201200 in words is "one trillion, two hundred twenty billion, eleven million, two hundred one thousand, two hundred".