221120120000 has 280 divisors, whose sum is σ = 600249571152. Its totient is φ = 80294400000.

The previous prime is 221120119991. The next prime is 221120120017. The reversal of 221120120000 is 21021122.

It is a happy number.

221120120000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31716515 + ... + 31723485.

Almost surely, 2^221120120000 is an apocalyptic number.

221120120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221120120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300124785576).

221120120000 is an abundant number, since it is smaller than the sum of its proper divisors (379129451152).

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

221120120000 is an equidigital number, since it uses as much as digits as its factorization.

221120120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077 (or 7052 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221120120000 its reverse (21021122), we get a palindrome (221141141122).

The spelling of 221120120000 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred twenty thousand".