221200100202222 has 16 divisors (see below), whose sum is σ = 491555778227280. Its totient is φ = 73733366734056.

The previous prime is 221200100202173. The next prime is 221200100202253. The reversal of 221200100202222 is 222202001002122.

221200100202222 is a `hidden beast` number, since 22 + 120 + 0 + 100 + 202 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221200100202195 and 221200100202204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048149075893 + ... + 2048149076000.

It is an arithmetic number, because the mean of its divisors is an integer number (30722236139205).

Almost surely, 2^{221200100202222} is an apocalyptic number.

221200100202222 is an abundant number, since it is smaller than the sum of its proper divisors (270355678025058).

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

221200100202222 is a wasteful number, since it uses less digits than its factorization.

221200100202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096298151904 (or 4096298151898 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221200100202222 its reverse (222202001002122), we get a palindrome (443402101204344).

The spelling of 221200100202222 in words is "two hundred twenty-one trillion, two hundred billion, one hundred million, two hundred two thousand, two hundred twenty-two".