221220200111120 has 40 divisors (see below), whose sum is σ = 587813674582464. Its totient is φ = 75846925752192.

The previous prime is 221220200111069. The next prime is 221220200111129. The reversal of 221220200111120 is 21111002022122.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (221220200111129) 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 7 ways as a sum of consecutive naturals, for example, 197518035254 + ... + 197518036373.

Almost surely, 2^{221220200111120} is an apocalyptic number.

221220200111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221220200111120 is an abundant number, since it is smaller than the sum of its proper divisors (366593474471344).

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

221220200111120 is a wasteful number, since it uses less digits than its factorization.

221220200111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395036071647 (or 395036071641 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221220200111120 its reverse (21111002022122), we get a palindrome (242331202133242).

The spelling of 221220200111120 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred million, one hundred eleven thousand, one hundred twenty".