221120122001200 has 30 divisors (see below), whose sum is σ = 531241093108844. Its totient is φ = 88448048800320.

The previous prime is 221120122001197. The next prime is 221120122001209. The reversal of 221120122001200 is 2100221021122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (221120122001209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276400152102 + ... + 276400152901.

Almost surely, 2^{221120122001200} is an apocalyptic number.

221120122001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120122001200 is an abundant number, since it is smaller than the sum of its proper divisors (310120971107644).

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

221120122001200 is a wasteful number, since it uses less digits than its factorization.

221120122001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552800305021 (or 552800305010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221120122001200 its reverse (2100221021122), we get a palindrome (223220343022322).

The spelling of 221120122001200 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred twenty-two million, one thousand, two hundred".