221002222120200 has 72 divisors (see below), whose sum is σ = 742199129293050. Its totient is φ = 58933925898240.

The previous prime is 221002222120189. The next prime is 221002222120217. The reversal of 221002222120200 is 2021222200122.

221002222120200 is a `hidden beast` number, since 2 + 210 + 0 + 222 + 212 + 0 + 20 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 101691210650436 + 119311011469764 = 10084206^2 + 10922958^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61389504345 + ... + 61389507944.

Almost surely, 2^{221002222120200} is an apocalyptic number.

221002222120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002222120200 is an abundant number, since it is smaller than the sum of its proper divisors (521196907172850).

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

221002222120200 is a wasteful number, since it uses less digits than its factorization.

221002222120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122779012311 (or 122779012299 counting only the distinct ones).

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

Adding to 221002222120200 its reverse (2021222200122), we get a palindrome (223023444320322).

The spelling of 221002222120200 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, one hundred twenty thousand, two hundred".