221200201122200 has 144 divisors (see below), whose sum is σ = 553806278902680. Its totient is φ = 82134609776640.

The previous prime is 221200201122137. The next prime is 221200201122221. The reversal of 221200201122200 is 2221102002122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21992882 + ... + 30431681.

Almost surely, 2^{221200201122200} is an apocalyptic number.

221200201122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200201122200 is an abundant number, since it is smaller than the sum of its proper divisors (332606077780480).

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

221200201122200 is a wasteful number, since it uses less digits than its factorization.

221200201122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52424686 (or 52424660 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221200201122200 its reverse (2221102002122), we get a palindrome (223421303124322).

The spelling of 221200201122200 in words is "two hundred twenty-one trillion, two hundred billion, two hundred one million, one hundred twenty-two thousand, two hundred".