22100222200221 has 48 divisors (see below), whose sum is σ = 35079864648192. Its totient is φ = 13296232857600.

The previous prime is 22100222200211. The next prime is 22100222200223. The reversal of 22100222200221 is 12200222200122.

22100222200221 is a `hidden beast` number, since 2 + 21 + 0 + 0 + 222 + 200 + 221 = 666.

It is not a de Polignac number, because 22100222200221 - 2²² = 22100218005917 is a prime.

It is a super-2 number, since 2×22100222200221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22100222200194 and 22100222200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100222200223) 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 47 ways as a sum of consecutive naturals, for example, 6375261 + ... + 9211101.

It is an arithmetic number, because the mean of its divisors is an integer number (730830513504).

Almost surely, 2^{22100222200221} is an apocalyptic number.

It is an amenable number.

22100222200221 is a deficient number, since it is larger than the sum of its proper divisors (12979642447971).

22100222200221 is a wasteful number, since it uses less digits than its factorization.

22100222200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836434 (or 2836431 counting only the distinct ones).

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

Adding to 22100222200221 its reverse (12200222200122), we get a palindrome (34300444400343).

Subtracting from 22100222200221 its reverse (12200222200122), we obtain a palindrome (9900000000099).

The spelling of 22100222200221 in words is "twenty-two trillion, one hundred billion, two hundred twenty-two million, two hundred thousand, two hundred twenty-one".