201222111200 has 72 divisors (see below), whose sum is σ = 535891091400. Its totient is φ = 73171673600.

The previous prime is 201222111199. The next prime is 201222111203. The reversal of 201222111200 is 2111222102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11424275 + ... + 11441874.

It is an arithmetic number, because the mean of its divisors is an integer number (7442931825).

Almost surely, 2^201222111200 is an apocalyptic number.

201222111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201222111200 is an abundant number, since it is smaller than the sum of its proper divisors (334668980200).

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

201222111200 is a wasteful number, since it uses less digits than its factorization.

201222111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22866180 (or 22866167 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201222111200 its reverse (2111222102), we get a palindrome (203333333302).

The spelling of 201222111200 in words is "two hundred one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred".