221211201100200 has 96 divisors (see below), whose sum is σ = 685816596178560. Its totient is φ = 58984331238400.

The previous prime is 221211201100177. The next prime is 221211201100207. The reversal of 221211201100200 is 2001102112122.

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 221211201100200.

It is not an unprimeable number, because it can be changed into a prime (221211201100207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9974721 + ... + 23279120.

It is an arithmetic number, because the mean of its divisors is an integer number (7143922876860).

Almost surely, 2^{221211201100200} is an apocalyptic number.

221211201100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221211201100200 is an abundant number, since it is smaller than the sum of its proper divisors (464605395078360).

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

221211201100200 is a wasteful number, since it uses less digits than its factorization.

221211201100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33264947 (or 33264938 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221211201100200 its reverse (2001102112122), we get a palindrome (223212303212322).

The spelling of 221211201100200 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred one million, one hundred thousand, two hundred".