22221220200120 has 64 divisors (see below), whose sum is σ = 74070734004000. Its totient is φ = 5925658719744.

The previous prime is 22221220200001. The next prime is 22221220200197. The reversal of 22221220200120 is 2100202212222.

22221220200120 is a `hidden beast` number, since 2 + 2 + 221 + 220 + 200 + 1 + 20 = 666.

It is a super-3 number, since 3×22221220200120³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 = 22221220200093 and 22221220200102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10287600865 + ... + 10287603024.

Almost surely, 2^{22221220200120} is an apocalyptic number.

22221220200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221220200120 is an abundant number, since it is smaller than the sum of its proper divisors (51849513803880).

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

22221220200120 is a wasteful number, since it uses less digits than its factorization.

22221220200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20575203909 (or 20575203899 counting only the distinct ones).

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

Adding to 22221220200120 its reverse (2100202212222), we get a palindrome (24321422412342).

The spelling of 22221220200120 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred twenty".