111221110122000 has 320 divisors, whose sum is σ = 378301527152640. Its totient is φ = 28034525376000.

The previous prime is 111221110121983. The next prime is 111221110122029. The reversal of 111221110122000 is 221011122111.

It is a happy number.

111221110122000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49400845 + ... + 51603155.

It is an arithmetic number, because the mean of its divisors is an integer number (1182192272352).

Almost surely, 2^{111221110122000} is an apocalyptic number.

111221110122000 is a gapful number since it is divisible by the number (10) 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 111221110122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189150763576320).

111221110122000 is an abundant number, since it is smaller than the sum of its proper divisors (267080417030640).

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

111221110122000 is a wasteful number, since it uses less digits than its factorization.

111221110122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202799 (or 2202783 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111221110122000 its reverse (221011122111), we get a palindrome (111442121244111).

The spelling of 111221110122000 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-two thousand".