111021121220000 has 480 divisors, whose sum is σ = 284061489776064. Its totient is φ = 42666624000000.

The previous prime is 111021121219999. The next prime is 111021121220083. The reversal of 111021121220000 is 22121120111.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 74963619260 + ... + 74963620740.

Almost surely, 2^{111021121220000} is an apocalyptic number.

111021121220000 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 111021121220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142030744888032).

111021121220000 is an abundant number, since it is smaller than the sum of its proper divisors (173040368556064).

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

111021121220000 is a wasteful number, since it uses less digits than its factorization.

111021121220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111021121220000 its reverse (22121120111), we get a palindrome (111043242340111).

The spelling of 111021121220000 in words is "one hundred eleven trillion, twenty-one billion, one hundred twenty-one million, two hundred twenty thousand".