221102001200 has 60 divisors (see below), whose sum is σ = 531917074920. Its totient is φ = 88321006080.

The previous prime is 221102001191. The next prime is 221102001209. The reversal of 221102001200 is 2100201122.

It is a happy number.

221102001200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221102001191) and next prime (221102001209).

It is not an unprimeable number, because it can be changed into a prime (221102001209) by changing a digit.

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, 78389 + ... + 669588.

It is an arithmetic number, because the mean of its divisors is an integer number (8865284582).

Almost surely, 2^221102001200 is an apocalyptic number.

221102001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221102001200 is an abundant number, since it is smaller than the sum of its proper divisors (310815073720).

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

221102001200 is a wasteful number, since it uses less digits than its factorization.

221102001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748734 (or 748723 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221102001200 its reverse (2100201122), we get a palindrome (223202202322).

The spelling of 221102001200 in words is "two hundred twenty-one billion, one hundred two million, one thousand, two hundred".