22221100202220 has 36 divisors (see below), whose sum is σ = 67404003947280. Its totient is φ = 5925626720544.

The previous prime is 22221100202209. The next prime is 22221100202227. The reversal of 22221100202220 is 2220200112222.

22221100202220 is a `hidden beast` number, since 22 + 221 + 1 + 0 + 0 + 202 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 22221100202193 and 22221100202202.

It is not an unprimeable number, because it can be changed into a prime (22221100202227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61725278160 + ... + 61725278519.

It is an arithmetic number, because the mean of its divisors is an integer number (1872333442980).

Almost surely, 2^{22221100202220} is an apocalyptic number.

22221100202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221100202220 is an abundant number, since it is smaller than the sum of its proper divisors (45182903745060).

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

22221100202220 is a wasteful number, since it uses less digits than its factorization.

22221100202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123450556694 (or 123450556689 counting only the distinct ones).

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

Adding to 22221100202220 its reverse (2220200112222), we get a palindrome (24441300314442).

The spelling of 22221100202220 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred million, two hundred two thousand, two hundred twenty".