201021222200 has 24 divisors (see below), whose sum is σ = 467374342080. Its totient is φ = 80408488800.

The previous prime is 201021222179. The next prime is 201021222203. The reversal of 201021222200 is 2222120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021222203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502552856 + ... + 502553255.

It is an arithmetic number, because the mean of its divisors is an integer number (19473930920).

Almost surely, 2^201021222200 is an apocalyptic number.

201021222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021222200 is an abundant number, since it is smaller than the sum of its proper divisors (266353119880).

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

201021222200 is a wasteful number, since it uses less digits than its factorization.

201021222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005106127 (or 1005106118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201021222200 its reverse (2222120102), we get a palindrome (203243342302).

The spelling of 201021222200 in words is "two hundred one billion, twenty-one million, two hundred twenty-two thousand, two hundred".