221111120000 has 160 divisors (see below), whose sum is σ = 553093266000. Its totient is φ = 88018560000.

The previous prime is 221111119949. The next prime is 221111120039. The reversal of 221111120000 is 21111122.

221111120000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16873451 + ... + 16886549.

Almost surely, 2^221111120000 is an apocalyptic number.

221111120000 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 221111120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276546633000).

221111120000 is an abundant number, since it is smaller than the sum of its proper divisors (331982146000).

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

221111120000 is an equidigital number, since it uses as much as digits as its factorization.

221111120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13344 (or 13317 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221111120000 its reverse (21111122), we get a palindrome (221132231122).

The spelling of 221111120000 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred twenty thousand".