221011201200 has 60 divisors (see below), whose sum is σ = 707972551688. Its totient is φ = 58936320000.

The previous prime is 221011201199. The next prime is 221011201219. The reversal of 221011201200 is 2102110122.

221011201200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92086801 + ... + 92089200.

Almost surely, 2^221011201200 is an apocalyptic number.

221011201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011201200 is an abundant number, since it is smaller than the sum of its proper divisors (486961350488).

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

221011201200 is a wasteful number, since it uses less digits than its factorization.

221011201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184176022 (or 184176011 counting only the distinct ones).

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

Adding to 221011201200 its reverse (2102110122), we get a palindrome (223113311322).

The spelling of 221011201200 in words is "two hundred twenty-one billion, eleven million, two hundred one thousand, two hundred".